I had unprotected sex on the 19th of march. I ovulated on the 20th of march and took Plan B on the 21st. Does Plan B work after ovulation has occurred?

Yes it does. Planb belongs to post coital contraceptive methods when taking high dose oral Progesterone with or without estrogen combination prevents pregnancy. It works by preventing fertilized egg from implanting into uterine lining. However it's efficacy is not 100% but probably about 85% and must be used within 48-72 hours after the unprotected sex.

Related Questions

Took 2 Plan B in one week after unprotected sex during and after ovulation? Does it still work?? And cramping on and off 5 days before expected per.

Yes. Plan B can work in one of three ways depending on where you are in your cycle. It can prevent or delay ovulation, can interfere with the fertilization of the egg or may prevent implantation by altering the lining of the uterus. If you take Plan B One-Step within 24 hours, it is about 95% effective. Read more...

Me and my boyfriend had unprotected sex yesterday and he ejaculated inside of me, my ovulation day is tomorrow, if I took Plan B tomorrow will it work?

Plan B. Plan B (http://www.drugs.com/plan-b.html) is most effective when taken within 72hrs of unprotected sex. So why wait until tomorrow? In the future, go see your family doc about some form of contraception. Check out http://www.plannedparenthood.org/all-access/my-method to get some idea of which method/form is best for you. Condoms perform dual role of both contraception & STI/STD risk reduction. Read more...
The sooner you. take the emergency contraceptive the better - especially since you anticipate that you will be ovulating soon. Plan B become less reliable over time. Recommend that you begin consistent and correct use of a regular form of birth control. Read more...

Will plan b work me and my girlfriend had unprotected sex and I think a drop got in it happen on a Friday and she took the pill Sunday and was also ovulating?

Late. Plan B may work but at best it is only 95% effective and that is if it is taken within the first 24 hr. after unprotected sex. The effectiveness falls the longer after sex it is taken. After the fact, taking it as soon as possible is the only option. Now, however, is the time for her to start a more reliable method of contraception if she isn't pregnant and use condoms to decrease the risk of STDs. Read more...

Will the Plan B one step pill still work for me? I have this app on my computer that tells me the day I am supposed to ovulate. I had unprotected sex on that day. I took Plan B within 12 hrs of it. I was just wondering if the fact I ovulated, or was suppo

Try . Try not to worry. The fact that you took Plan B so soon after intercourse, regardless of ovulation means the greater the chance that it will work in preventing pregnancy. Some people experience a period early after taking plan b, others do not. If you don't get your period on the 20th, then you can take an early prediction pregnacy test. Good luck! Read more...
Plan B.
Plan B One-Step can reduce your risk of pregnancy by up to 95% if used within 24 hours of sex. If taken within 72 hours it can reduce risk of pregnancy by up to 89%.
. Read more...