Birth Control FAQ — Common Questions About Oral Contraceptives
1.What are birth control pills and how do they work?
Birth control pills (oral contraceptives) are hormonal medications that prevent pregnancy using synthetic estrogen and progestin hormones. First approved in 1960, they revolutionized reproductive healthcare and remain among the most widely used medications globally with 151 million women using them.
How they prevent pregnancy:
Available on RXshop:
2.How effective are birth control pills?
Birth control pills are among the most effective reversible contraceptive methods when used correctly.
Effectiveness rates:
- Perfect use: Over 99 percent effective (less than 1 pregnancy per 100 women per year)
- Typical use: Approximately 91 percent effective (9 pregnancies per 100 women per year)
- Difference reflects missed pills, incorrect timing, drug interactions
Factors affecting effectiveness:
- Adherence - taking pill same time daily
- Missed pills - especially in first week of pack
- Vomiting/severe diarrhea within 2 hours of taking
- Drug interactions - certain medications reduce effectiveness
- Weight - may affect some pill types
To maximize effectiveness:
- Take same time every day
- Set daily alarm reminder
- Complete all pills in pack
- Use backup during first 7 days when starting
- Know missed pill guidance
- Inform doctors of pill use
- Consider backup with interacting medications
Perfect use adherence to Yasmin, Levlen, or other pills provides highly reliable pregnancy prevention.
3.Who can use hormonal birth control?
Most healthy women can safely use combined oral contraceptives. However, certain conditions require caution or alternative methods.
Good candidates:
- Healthy women wanting pregnancy prevention
- Regular cycles or wanting cycle regulation
- Menstrual pain (dysmenorrhea)
- Heavy periods
- Acne (some formulations approved)
- PCOS (helps regulate cycles)
- Endometriosis symptoms
- PMDD (Yasmin approved)
- Family history of ovarian cancer (protective effect)
Requires medical evaluation:
- Age over 35
- Obesity (BMI over 30)
- Well-controlled hypertension
- Diabetes without complications
- Migraines without aura
- Family history of blood clots
- Depression history
- Gallbladder disease
Method selection depends on:
- Medical history
- Medications
- Cardiovascular risk factors
- Personal preferences
- Desire for future pregnancy
- Non-contraceptive benefits desired
Different pill types like Mircette, Ortho Tri-Cyclen, and Ovral G suit different needs. Discussion with healthcare provider ensures best choice.
4.Who should NOT use combined oral contraceptives?
Absolute contraindications - do NOT use combined oral contraceptives:
- History of blood clots (DVT, pulmonary embolism)
- Known thrombophilia (clotting disorders)
- History of stroke or heart attack
- Age over 35 AND smoking - dangerous combination
- Uncontrolled hypertension
- Diabetes with vascular complications
- Migraine with aura
- Current or past breast cancer
- Estrogen-dependent tumors
- Liver disease or liver tumors
- Undiagnosed vaginal bleeding
- Pregnancy (known or suspected)
- First 21 days postpartum (VTE risk)
- Major surgery with prolonged immobilization
- Known allergy to any component
Alternative options for these situations:
- Progestin-only pills
- Non-hormonal methods (copper IUD, barrier methods)
- Permanent methods (tubal ligation)
- Hormonal IUD
- Contraceptive implant
Comprehensive medical evaluation essential before starting any hormonal contraception. Update healthcare provider on any changes in medical status.
5.What are the non-contraceptive benefits of birth control pills?
Beyond preventing pregnancy, combined oral contraceptives provide significant health benefits:
Menstrual benefits:
- Regular predictable cycles
- Reduced menstrual bleeding (lighter periods)
- Reduced menstrual cramps
- Reduced PMS symptoms
- PMDD treatment (Yasmin approved)
- Reduced iron-deficiency anemia
Cancer prevention:
- Ovarian cancer - up to 50 percent reduction with 5+ years use
- Endometrial cancer - up to 50 percent reduction
- Colorectal cancer - reduced risk
Gynecological benefits:
- Ovarian cyst prevention
- Endometriosis symptom management
- PCOS treatment
- Fibroid symptom management
- Reduced benign breast disease
Skin benefits:
- Acne improvement (Ortho Tri-Cyclen approved for acne)
- Hirsutism reduction
- Some formulations approved for acne
Other benefits:
- Bone density preservation
- Migraine prevention (extended cycle use)
- Reduced pelvic inflammatory disease severity
- Reduced ectopic pregnancy risk
These benefits often persist for years after stopping the pills.
6.What is the difference between the various birth control pills?
Different birth control pills vary primarily in progestin type, doses, and pill arrangement.
By progestin generation:
- First generation: Norethindrone, norgestrel (like Ovral G) - older, established
- Second generation: Levonorgestrel (Levlen) - lowest VTE risk
- Third generation: Desogestrel (Mircette), norgestimate (Ortho Tri-Cyclen) - less androgenic
- Fourth generation: Drospirenone (Yasmin) - anti-androgenic, anti-mineralocorticoid
By phasing:
- Monophasic: Same dose all active pills
- Biphasic: Two different doses
- Triphasic: Three different doses (Ortho Tri-Cyclen) - mimics natural cycle
By estrogen dose:
- Low-dose: 20mcg ethinyl estradiol (Mircette) - fewer side effects
- Standard-dose: 30-35mcg
- Higher-dose: 50mcg (Ovral G) - specific indications
Choice depends on: individual response, side effects, specific benefits desired, cost, and medical history.
7.How should I take birth control pills?
Correct pill-taking is essential for maximum effectiveness.
Starting the pills:
- Day 1 start - first day of period; immediate protection
- Sunday start - first Sunday after period; use backup 7 days
- Quick start - start any day; use backup 7 days
Daily use:
- Take same time every day - within 3-hour window
- Set daily alarm reminder
- Associate with routine (brushing teeth, meals)
- Take with or without food
- Complete all pills in pack (including inactive/placebo pills)
- Start next pack immediately after finishing previous
What to expect:
- Period during placebo/inactive pill week
- May experience some breakthrough bleeding in first 3 months
- Full protection after 7 days
- Regular cycles usually within 2-3 months
Important reminders:
- Continue through breakthrough bleeding
- Do NOT skip pills to end period sooner
- Store at room temperature
- Keep track of pack days
- Reorder before running out
- Never share with others
Consistency is key - taking Yasmin, Levlen, or any pill at the same time daily provides best protection.
8.What should I do if I miss a birth control pill?
Missed pill guidance depends on how late you are:
Less than 48 hours late (1 pill missed):
- Take missed pill as soon as remembered
- Take next pill at usual time (may take 2 pills same day)
- Continue rest of pack normally
- NO backup contraception needed
- NO emergency contraception needed
More than 48 hours late (2+ pills missed):
- Take most recent missed pill immediately
- Discard other missed pills
- Take next pill at usual time
- USE BACKUP CONTRACEPTION for 7 days
- If pills missed in week 1: consider emergency contraception if unprotected sex in past 5 days
- If pills missed in week 3: skip placebo/inactive pills, start new pack immediately
Vomiting or severe diarrhea:
- If vomiting within 2 hours of taking pill - treat as missed pill
- Severe diarrhea for more than 24 hours - treat as missed pills
- Use backup contraception
Missing placebo (inactive) pills:
- Just skip missed placebo pills
- Start new pack as scheduled
- No backup needed
To prevent missed pills:
- Set daily alarms
- Use pill reminder apps
- Keep pills visible
- Carry backup pack
- Consider longer-acting method if adherence difficult
9.Do antibiotics reduce birth control effectiveness?
Most antibiotics do NOT significantly reduce birth control pill effectiveness, contrary to widespread belief. Only rifampin and rifabutin proven to reduce effectiveness.
Antibiotics that DO reduce effectiveness:
- Rifampin - major reduction; use backup
- Rifabutin - similar effect
- Griseofulvin (antifungal)
Antibiotics that do NOT significantly reduce effectiveness:
- Amoxicillin, penicillins
- Cephalosporins
- Macrolides (azithromycin, clarithromycin)
- Fluoroquinolones (ciprofloxacin)
- Tetracyclines (doxycycline)
- Metronidazole
- Trimethoprim/sulfamethoxazole (Bactrim)
Why the confusion?
- Old theory suggested antibiotics disrupted gut bacteria affecting pill metabolism
- Modern studies show this is not clinically significant
- Rifampin remains only proven interaction
Prudent recommendations:
- Illness itself may cause vomiting/diarrhea affecting absorption
- Consider backup contraception if concerned
- Always use backup with rifampin
- Ask pharmacist if uncertain
Other medications that reduce effectiveness:
- Anticonvulsants (phenytoin, carbamazepine, topiramate)
- Some HIV medications
- St. Johns Wort
- Modafinil
10.Can birth control pills be taken to skip periods?
Yes, birth control pills can safely be used to skip or reduce periods. This is called "continuous" or "extended" cycle use.
How to skip periods:
- Skip the placebo/inactive pill week
- Start next active pill pack immediately
- Continue taking active pills without break
- Works best with monophasic pills
Options for reducing periods:
- Traditional cycle: Period monthly
- Extended cycle: Period every 3 months
- Continuous use: No periods at all
- FDA-approved extended pills: Special formulations available
Is skipping periods safe?
- Yes - no medical reason to have monthly periods on pills
- Periods on pills are "withdrawal bleeding" not natural menstruation
- Skipping does not build up hormones in body
- May cause breakthrough bleeding initially
- Improves over months of continuous use
Benefits of period skipping:
- Fewer painful periods
- Reduced menstrual migraines
- Improved endometriosis symptoms
- Reduced PMS
- Better anemia management
- Convenience for events, travel
Discuss with your doctor before starting continuous use. Not all pills equally suitable - monophasic Yasmin or Levlen work well for this.
11.What are the side effects of birth control pills?
Common side effects (usually improve after 2-3 months):
- Nausea - especially early treatment (take with food)
- Breast tenderness
- Headaches
- Mood changes
- Weight changes (usually minimal)
- Breakthrough bleeding (spotting between periods)
- Changes in libido
- Vaginal discharge changes
- Bloating (less with Yasmin due to diuretic effect)
- Melasma (skin darkening)
- Acne changes (may improve or worsen)
Serious risks (uncommon but important):
- Venous thromboembolism (VTE) - blood clots
- Pulmonary embolism
- Deep vein thrombosis (DVT)
- Heart attack
- Stroke
- Hypertension
- Gallbladder disease
- Liver adenomas (rare)
Warning signs (ACHES) - seek immediate care:
- Abdominal pain (severe)
- Chest pain or shortness of breath
- Headache (severe or unusual)
- Eye problems (vision changes)
- Severe leg pain
Managing side effects: often improve after 2-3 months. If persistent, discuss with doctor about switching pill types.
12.Can birth control pills cause blood clots?
Yes, combined oral contraceptives increase risk of blood clots (VTE), though absolute risk remains low for most healthy women.
Risk numbers:
- Non-users: 2-4 VTE per 10,000 women per year
- Pill users: 8-10 VTE per 10,000 women per year
- Pregnancy: 20 VTE per 10,000 women per year
- Postpartum: 40-65 VTE per 10,000 women per year
Risk varies by pill type:
- Levonorgestrel pills (Levlen) - LOWEST risk among combined pills
- Third-generation pills (Mircette) - slightly higher
- Drospirenone pills (Yasmin) - some studies show higher risk
Risk factors increasing clot risk:
- Smoking
- Age over 35
- Obesity (BMI over 30)
- Family history of clots
- Personal history of clots
- Prolonged immobility
- Major surgery
- Thrombophilia disorders
Warning signs of blood clot:
- Leg pain, swelling, redness (DVT)
- Chest pain, shortness of breath (PE)
- Severe headache, vision changes, weakness (stroke)
Seek emergency care for any concerning symptoms. Report clot history to prescribers.
13.Can I take birth control pills if I smoke?
Combining birth control pills with smoking is DANGEROUS, especially over age 35. The combination dramatically increases cardiovascular risks.
Risks with smoking and pills:
- Significantly increased risk of heart attack
- Higher stroke risk
- Increased blood clot risk
- Elevated blood pressure
- Risk increases with age and cigarettes smoked
Age considerations:
- Under 35 and smoker: Combined pills possible but not ideal - benefits may outweigh risks for some
- Over 35 and smoker: Combined pills CONTRAINDICATED - risk too high
- 15+ cigarettes daily particularly dangerous
Alternatives for smokers:
- Progestin-only pills
- Copper IUD (non-hormonal)
- Hormonal IUD
- Implant
- Depot medroxyprogesterone injection
- Barrier methods (condoms, diaphragm)
- Permanent methods
Best approach:
- Strong recommendation to quit smoking
- Discuss with doctor about safe options
- Consider smoking cessation resources
- If cannot quit, switch to safer contraception
- Regular cardiovascular monitoring
The reality: quitting smoking benefits your health far beyond contraception considerations. Support programs and medications can help.
14.Do birth control pills cause weight gain?
Modern low-dose birth control pills typically cause minimal or no significant weight gain, contrary to widespread belief.
What research shows:
- Studies show minimal weight change with modern pills
- Any change usually less than 5 pounds
- Fluid retention may cause temporary bloating
- Long-term studies show no major weight impact
- Older higher-dose pills had more weight impact
Why some women feel they gained weight:
- Fluid retention (temporary, resolves)
- Increased appetite in some users
- Natural weight changes with age
- Lifestyle changes coincident with pill use
- Water retention with certain progestins
Pills less likely to cause weight gain:
- Yasmin - drospirenone has mild diuretic effect
- Low-dose formulations
- Third-generation progestins
If weight change concerns you:
- Maintain healthy diet
- Regular exercise
- Monitor weight over months, not weeks
- Consider switching pill types if significant gain
- Discuss with doctor
Reassurance: If you gain weight while on pills, it may be coincidental. Try different pill formulation if concerned. Weight gain rarely reason to stop otherwise well-tolerated contraception.
15.How quickly does fertility return after stopping the pill?
Fertility returns quickly after stopping birth control pills - typically within 1-3 months. Long-term pill use does NOT cause infertility.
Return of fertility timeline:
- Immediate: Some women ovulate within first month
- 1-3 months: Most women resume normal ovulation
- 3-6 months: Cycles fully regularized in most
- Beyond 6 months: Rarely takes longer - investigate other causes
What research shows:
- Similar pregnancy rates in former pill users vs never users after adjustment
- Long-term pill use does not reduce fertility
- Fertility may actually be preserved by preventing infections and endometriosis progression
- Some studies show slightly higher pregnancy rates first year after stopping
What to expect after stopping:
- Regular cycles may return quickly or take a few months
- Some may experience temporary irregular cycles
- Others resume same pattern as before pills
- Pre-pill conditions (PCOS, endometriosis) may return
Planning pregnancy after stopping:
- No wait period required
- Can conceive immediately after stopping
- Start prenatal vitamins before conceiving
- Folic acid especially important
- Discuss with doctor about health optimization
If not pregnant after 12 months (or 6 months if over 35), see doctor for fertility evaluation. Pills unlikely cause but other factors need assessment.
16.Can birth control pills cause cancer?
Birth control pill effects on cancer are complex - they REDUCE some cancer risks while slightly increasing others.
Cancer risk REDUCTIONS:
- Ovarian cancer: Up to 50 percent reduction with 5+ years use; protection persists decades after stopping
- Endometrial cancer: Up to 50 percent reduction
- Colorectal cancer: Reduced risk
Small increased risks:
- Breast cancer: Slight increase during use, returns to baseline within 10 years of stopping
- Cervical cancer: Slight increase with long-term use (HPV is main cause)
- Liver adenoma: Very rare
Overall cancer impact:
- Net effect appears to be REDUCED overall cancer risk
- Ovarian cancer protection particularly important (less common but often fatal)
- Regular cervical cancer screening (Pap smears) essential
- Regular breast examinations recommended
Who should be more cautious:
- Family history of breast cancer
- Personal history of breast cancer (CONTRAINDICATED)
- BRCA gene mutations
- Precancerous cervical changes
Cancer screening on pills:
- Regular Pap smears/HPV testing
- Clinical breast examinations
- Mammograms as recommended
- Skin examinations
Discuss individual risk with healthcare provider - overall benefits often outweigh risks for most women.
17.Are birth control pills safe long-term?
Yes, birth control pills are generally safe for long-term use in appropriate candidates. No breaks required between packs.
Long-term safety:
- Studies show safety with 20+ years of use in appropriate users
- No breaks required
- Continuous use does not "build up" hormones
- Health monitoring should continue
- Formulations may need adjustment over time
Long-term benefits:
- Sustained reduction in ovarian and endometrial cancer risk
- Cycle regulation
- Bone density preservation
- Reduced menstrual pain and PMS
- Reduced anemia risk
- Reduced ovarian cyst formation
Long-term considerations:
- Annual medical evaluation
- Blood pressure monitoring
- Assessment of cardiovascular risk factors
- Regular gynecological care
- Review of continued suitability
- Update of health status
When to reconsider long-term use:
- Age over 35 combined with smoking
- Development of new medical conditions
- New medications with interactions
- Concerns about specific side effects
- Menopause approaching (transition to different methods)
Modern formulations like Yasmin, Mircette, and Levlen are designed for safe long-term use in appropriate candidates.
18.What if I have no period during the placebo week?
Missing periods on birth control pills is relatively common and usually NOT a sign of pregnancy if pills taken correctly.
Why periods may be absent:
- Thin uterine lining from suppression
- Common with low-dose pills
- More likely after months/years of use
- Individual response varies
- Some pills specifically designed to reduce periods
Is this safe?
- YES - not medically concerning
- Hormones do NOT build up in body
- No health consequences
- Uterine lining sheds appropriately over time
- Fertility returns when stopped
When to consider pregnancy:
- Missed pills in the pack
- Vomiting/diarrhea affecting absorption
- Drug interactions
- Pregnancy symptoms present
- Two consecutive missed periods
What to do if concerned:
- Take pregnancy test if pills were missed
- Continue taking pills as scheduled
- Contact doctor if missed 2 consecutive periods
- Adjustments to pill type possible if bothersome
Some women prefer absent periods:
- Convenient for lifestyle
- Reduced menstrual symptoms
- Extended cycle pills specifically designed for this
- Continuous use of monophasic pills like Yasmin or Levlen can eliminate periods
Discuss with your doctor if this is a new pattern or concerns you.
19.Do birth control pills protect against STIs?
NO - Birth control pills provide ZERO protection against sexually transmitted infections (STIs). This is a critical distinction.
What pills prevent:
- Pregnancy (over 99 percent with perfect use)
- Only pregnancy - nothing else
What pills do NOT prevent:
- HIV/AIDS
- Chlamydia
- Gonorrhea
- Syphilis
- Herpes
- HPV (human papillomavirus)
- Hepatitis B and C
- Trichomoniasis
- All other STIs
STI prevention requires:
- Male or female condoms - best physical protection
- Regular STI testing
- Mutual monogamy with tested partner
- HPV vaccination
- Hepatitis B vaccination
- PrEP for HIV prevention if high-risk
- Reducing number of sexual partners
- Avoiding sexual contact with symptomatic partners
Dual protection approach:
- Use pills for pregnancy prevention
- Use condoms for STI prevention
- Both together provide comprehensive protection
- Regular sexual health screening
Regular STI testing recommended for sexually active people, especially with new partners. Many STIs asymptomatic - testing essential.
20.Should I stop birth control pills before surgery?
Combined oral contraceptives may need to be stopped before major surgery due to blood clot risk during and after surgery.
General recommendations:
- Major surgery: Stop pills 4-6 weeks before
- Minor surgery: Usually continue
- Dental procedures: Usually continue
- Emergency surgery: Cannot always stop in time
When to consider stopping:
- Prolonged immobilization expected
- Major orthopedic surgery
- Neurosurgery
- Cancer surgery
- Trauma surgery
- Prolonged bed rest anticipated
Risk factors requiring stopping:
- Personal or family history of blood clots
- Age over 35
- Obesity
- Prolonged surgery expected
- Extended recovery immobilization
After surgery:
- Wait for adequate mobilization (typically 2 weeks after major surgery)
- Consider progestin-only alternatives during recovery
- Blood thinners may be prescribed prophylactically
- Use alternative contraception during break
Alternative contraception during surgical break:
- Condoms
- Progestin-only pills
- Copper IUD
- Existing hormonal IUD
- Abstinence
Always inform your surgical team about pill use. Individual assessment guides recommendations. Do not stop suddenly without medical guidance for planned surgeries.
21.What is emergency contraception and how does it differ from birth control pills?
Emergency contraception (EC) is used AFTER unprotected sex to prevent pregnancy - different from regular birth control pills used to prevent pregnancy in advance.
Emergency contraception options:
- Levonorgestrel EC (Plan B) - up to 72 hours after (best under 24 hours)
- Ulipristal acetate (ella) - up to 120 hours (5 days)
- Copper IUD - most effective, up to 5-7 days; provides ongoing contraception
- Yuzpe method - high-dose regular pills (rarely used now)
When emergency contraception needed:
- Unprotected intercourse
- Condom failure (breakage)
- Missed pills (particularly if 2+ in first week)
- Missed pill week extended
- Sexual assault
- Delayed contraceptive method
How EC works:
- Primarily delays or prevents ovulation
- Does NOT cause abortion
- Does not affect existing pregnancy
- Less effective the later taken
Effectiveness:
- Levonorgestrel EC: 85 percent effective if taken within 24 hours
- Ulipristal: 85 percent effective up to 120 hours
- Copper IUD: over 99 percent effective
Important:
- NOT for regular use
- Less effective than regular contraception
- Available OTC in many places (levonorgestrel)
- Start or continue regular contraception after
- If already on Yasmin or other pills - continue after EC
- Take pregnancy test if period late
22.When should I see a doctor about birth control?
EMERGENCY - seek immediate care for (ACHES):
- Abdominal pain (severe)
- Chest pain or shortness of breath
- Headache (severe or unusual, migraine with aura)
- Eye problems (vision loss, blurring)
- Severe leg pain (calf, thigh) or swelling
- Speech difficulty or one-sided weakness
- Coughing up blood
See doctor promptly for:
- Persistent bothersome side effects
- Mood changes affecting daily life
- Persistent breakthrough bleeding after 3 months
- Missed periods with correct pill use
- Suspected pregnancy
- Concerning weight changes
- New or worsening headaches
- Blood pressure elevation
- Pregnancy planning
- Considering method change
- New medical conditions
- New medications with potential interactions
- Sexual health concerns
Regular care needed:
- Annual gynecological examination
- Blood pressure checks
- Cervical cancer screening (Pap smears/HPV testing)
- STI testing if sexually active with new partners
- Breast examinations
- Discussion of any health changes
- Medication reconciliation
Special situations:
- Age transitions (35, menopause approach)
- Postpartum period
- New relationships
- Health changes
- Wanting different contraceptive method
Never delay seeking care for concerning symptoms. Good communication with your healthcare provider ensures safe, effective contraception.
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