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Doctor insights on: Plan B Morning After Pill Side Effects

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Dr. Heidi Fowler
631 doctors shared insights

Emergency Contraception (Definition)

Emergency contraception is the method a woman can use to avoid getting pregnant, after she has received sperm in her vagina. She takes the hormone pills, which are usually larger doses of hormones used in oral birth control pills, within a short time (days) after her sexual activity, ...Read more


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I took plan b, morning after pill 2-3 weeks ago. Have fever, muscle weakness, extreme fatigue since. Side effects/related? See meds list for details.

I took plan b, morning after pill 2-3 weeks ago. Have fever, muscle weakness, extreme fatigue since. Side effects/related? See meds list for details.

Too long : It's too long from exposure to Plan B to have adverse effects from it. You may be ill with an intercurrent illness, you may be pregnant, or another of your medications may be the cause. Check home pregnancy test, if negative, see your prescribing doctor. ...Read more

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How effective is Plan B (morning after pill)? Does it work all the time?

Nothing is 100%: Accoring to labeling for Plan B it prevents 7 of 8 pregnancies that could have occurred (drops pregnancy risk by 88%). Taken within 24 hours after sex, if can reduce risk up to 95%. ...Read more

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Is it normal to have clear discharge after taking Plan B morning after pill?

Is it normal to have clear discharge after taking  Plan B morning after pill?

Yes: The discharge may be caused by the hormonal changes to cervical mucous caused by plan b. It is not a sign of anything wrong. ...Read more

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Is it normal to get cramps two days after taking the plan b.. "morning after pill"?

Is it normal to get cramps two days after taking the plan b.. "morning after pill"?

Yes: Potential side effects with emergency contraception can include: tender breasts; changes in menstrual flow (spotting, bleeding, early or late period); loose stools; dizziness; headache; nausea/ vomiting; abdominal discomfor, cramping or feeling tired. Notify your doctor if your period is 7 or more days late. ...Read more

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Is it normal to start period two days after plan b morning after pill? How common is it to happen ?

Is it normal to start period two days after plan b morning after pill? How common is it to happen ?

Not uncommon: It is not uncommon for emergency contraception (like Plan B) to affect your menstrual cycle, leading to a missed period or earlier period. It also depends on where you were in your cycle when you used it. Take Care! ...Read more

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Is it okay to take both Plan B morning after pill and also azithromycin for an infection?

Is it okay to take both Plan B morning after pill and also azithromycin for an infection?

Usually yes: The two medications are independent of one another but a follow up is essential because some antibiotics can interfere with the absorption of hormones from the intestine so you should only do this under the supervision of your physician. ...Read more

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Brown blood coming from vagina and 3 days before my period. I took a plan b morning after pill last Sunday.

Brown blood coming from vagina and 3 days before my period. I took a plan b morning after pill last Sunday.

About Plan B...: Plan B can alter the menstrual bleeding for the cycle in which Plan B was taken, and sometimes the next cycle too. One should be sure to check a home pregnancy test about 3 weeks after sex, because Plan B works most of the time, but not all the time. Tests are sold everywhere, and are cheap to buy. ...Read more

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Does Aftera morning after pill works the same as Plan B ?

Plan B One Step: Plan B One Step and Aftera both contain 1.5mg of levonorgestrel as the active ingredient and work the same way. Regular Plan B contains .75mg of levonorgestrel and requires 2 doses. Best wishes. ...Read more

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Do you promise that the morning after pill, plan b, is very effective? I'm REALLY worried.

Just the data: No one can promise but rather we can relay the clinical data. Plan B when used appropriately within 72 hours of unprotected intercourse decreases the risk of pregnancy by about 70%. It should be a back up plan. Going forward use condoms and start a better form of birth control ...Read more

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I have taken the morning after pill twice in one month. First time plan B second time generic. Is it not going to be effective?

I have taken the morning after pill twice in one month. First time plan B second time generic. Is it not going to be effective?

Should be effective: I don't see a problem between the brand and generic, as long as they were taken as instructed within the 48-72 hour. May need to talk to your doctor about other forms of contraception. ...Read more

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Is Taking The Morning After Pill , The Plan-B One-Step Pill , 30 Minutes After Sex Too Soon ?

Is Taking The Morning After Pill , The Plan-B One-Step Pill , 30 Minutes After Sex Too Soon ?

No: the sooner the better in terms of how effective the medication will be in reducing risk of pregnancy. a consistent method + condoms is best way to be protected. take care! :) ...Read more

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My 14 year old sister had unprotected sex and needs the plan b or morning after pill but dosent know how to get it, I would help but I live away?

My 14 year old sister had unprotected sex and needs the plan b or morning after pill but dosent know how to get it, I would help but I live away?

Encourage your sis: to see her pediatrician, with whom she can speak privately. Fear of pregnancy may be the acute issue, but she also needs counseling on current & future risks of unsafe sex. She can trust her pediatrician to help her get the care & protection she needs. ...Read more

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Can the morning after pill (plan b) delay the next menstruation?

Can the morning after pill (plan b) delay the next menstruation?

Yes: Potential se’s w emergency contraception: tender breasts; changes in menstrual flow (spotting, bleeding, early or late period or spotting instead of period); loose stools; dizziness; headache; nausea/ vomiting; abdominal discomfort or feeling tired. If you develop chest tightness, difficulty breathing, swelling of lips, mouth, throat – call 911. Notify your gyn if your period is 7 or > days late. ...Read more

Dr. Adam Levy
628 doctors shared insights

Morning After Pill (Definition)

Emergency contraception is a method to prevent pregnancy in women who have had unprotected sex, or for whom a barrier method has failed (slipped condom, diaphragm, or cervical cap, or broken condom). Emergency contraception medicine is not the same ...Read more