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Miami, FL
A 29-year-old female asked:

Can you take plan b twice in one week? had unprotected sex with no ejaculation last day of period thursday & took plan b within 72 hours & started birth control on sunday. on sunday we had unprotected sex again & no ejaculation. should i take plan b?

1 doctor answer1 doctor weighed in
Dr. John Berryman
Obstetrics and Gynecology 56 years experience
Plan B ?'s: "unprotected sex w/o ejaculation" may be a false assumption, as semen can be released without full ejaculation. If you "started birth control" (assuming oral bcp's ?) remember that bleeding is common after Plan B wears off, and is not a "period", so starting bcp's may not prevent ovulation. Best is to stop having unprotected sex, wait until a real period occurs, and start bcp's on day 3 of period.
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Related questions

A 22-year-old female asked:
I had unprotected sex the day I got my birth control shot I took a plan b the next day , how effective is the plan b in this case ? My last period was on 1/15/2021?
Dr. Hishalah Zvulon
22 years experience
Plan B: Plan B is a form of emergency contraception. It prevents pregnancy from occuring when there is no established pregnancy. Plan B is not 100% effective.... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 18-year-old female asked:
Had unprotected sex while on birth control(pills), during off week, just started period, he ejaculated inside me, should I take plan b? Been on bc 1yr
Dr. Eric Goldstein
Pediatrics 24 years experience
Not yet: Though it' s unlikely that you are pregnant based on the scenario you describe, no form of birth control can guarantee 100% prevention of pregnancy. I... Read More
Created for people with ongoing healthcare needs but benefits everyone.
View all answers
A 23-year-old female asked about a 27-year-old female:
I was on Yaz (drospirenone and ethinyl estradiol) birth control pill but i stopped taking it after 12 days . My period lasted just for one day is it normal?I had an unprotected sex too
Dr. Marie Trenga
Family Medicine 38 years experience
Yaz (drospirenone and ethinyl estradiol): If you stopped taking pills partway through a pack, your cycle may be irregular. But if you had unprotected sex and are concerned take a pregnancy tes... Read More
Created for people with ongoing healthcare needs but benefits everyone.
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A member asked:
I had unprotected sex on my period I am on birth control should I take a plan b?
Dr. Gurmukh Singh
Pathology 51 years experience
Depends: If you take the pills regularly, you should not need to take plan B. Taking plan B will not do harm. Do as it makes you feel more comfortable.
Created for people with ongoing healthcare needs but benefits everyone.
A female asked:
On birth controll, had protected and unprotected sex, took plan B 2 days after sex and a day before my period starts, a week later and still no period?
Dr. Gurmukh Singh
Pathology 51 years experience
Hormonal imbalance: Plan B could disrupt your menstrual rhythm. If at three weeks after your episode of unprotected sex, you do not get a peiod, do a home pregnancy test.... Read More
Created for people with ongoing healthcare needs but benefits everyone.
Last updated May 7, 2019

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