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www.verywellhealth.com/how-plan-b-works-906842

Many women may choose to use Plan B One-Step (or its generic forms, My Way, Take Action, and Next Choice One Dose) as emergency contraception to prevent pregnancy after birth control failure or unprotected intercourse. Even though emergency contraception is safe and effective, the use of Plan B continues to generate controversy.Much of this debate stems from how Plan B works—specifically ...

www.medhelp.org/posts/Pregnancy-Am-I-Pregnant/Unprotected-sex-during-likely...

I got pregnant after takin Plan B last year. Sometimes, you take plan B after unprotected sex and relaise later that it was the previous intercourse that knocked you up. I can't exactly remember where I was in my cycle... This time, I took plan B the day after ovulation, having had sex on the day of.

ask.metafilter.com/272208/Does-Plan-B-work-after-ovulation

Plan B does not seem to prevent pregnancy after ovulation, but (a) I'm not sure how you can be totally sure your ovary has already released an egg, and (b) there are other options, like ella, that may be effective after ovulation.

ehealthforum.com/health/i-took-plan-b-i-am-afraid-it-was-during-ovulation-t...

If an ovulating woman took Plan B in that time frame, it could prevent sperm from fertilizing because they couldn't capacitate. Of course if you wait 120 hours, sperm will have a chance to fertilize and Plan B wouldn't do anything. Indeed, 7 of the women in that study (remember 8 got pregnant) took Plan B after 72 hours.

allianceforlife.org/plan-b-near-useless-and-may-increase-pregnancy-risk-in-women-who...

Plan B is supposed to “work” if taken within 72 hours of unprotected sex. But your paper says if Plan B is taken on the day of ovulation or thereafter, it does not appear to impact a pregnancy. Thus, would you say Plan B is (useless) if taken during or after ovulation?

www.drugs.com/answers/effect-ovulation-606996.html

The "pill" that in talking about is the Plan B Step One aka the morning after pill. I took this within 3 hours of the inccident. And I want to know if it works just as well if I'm ovulating and would love to know if it will push back my period since my period don't come till 3 to 5 days. Or will it come at regular time?

www.reddit.com/.../comments/3o4gu2/is_plan_b_ineffective_if_you_take_it_during_or

However, I know Plan B works by delaying or preventing ovulation, so since I was already ovulating when I took it, does that mean it will be ineffective? On the package it states that the pill "may" work by preventing fertilization or implantation, but after some research online, it seems that many studies have shown that it does not in fact ...

www.planbsideeffects.net/will-i-have-a-normal-period-after-i-take-plan-b

Will my period be heavier or last longer than normal after taking Plan B? Longer and heavier cycles are common in about 15% of women who take Plan B after ovulation toward the end of their cycle. Women who took Plan B in early stages of the menstrual cycle may experience spotting. Will my period be late after taking Plan B? If you take Plan B ...

www.self.com/story/emergency-contraception-mistakes

One common type of emergency contraception is OTC morning-after pills like Plan B and Next Choice, which use levonorgesterel, a synthetic version of the hormone progesterone, to delay ovulation ...

www.webmd.com/sex/birth-control/plan-b

WebMD discusses what Plan B is, why it's used, and its effectiveness and side effects. ... People sometimes call it the "morning after pill." ... It may prevent or delay ovulation.