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can missing birth control pills affect pregnancy AFTER sexual activity?

I had sex with a girl a few weeks ago and she was on birth control but I didn't use a condom and came inside her. Yesterday she told me she's late but she also said she missed her pill a few days ago for a few days. So my question is, if I had sex with her on March 28th, and she missed her pill on April 10th, 11th, and 12th or something, could that affect pregnancy or did it just screw up her cycle?

Public Comments

1. very doubtful... if she is pregnant, i doubt you are the father...
2. no, the sperm can only live for 72 hours, so unless she messed up her BC within those 72 hours, she couldn't have gotten pregnant. Her cycle is just messed up.
3. if she is pregnant its not yours. sperm cant live that long....so its probably just her cycle being confused... good luck
4. missing pills or taking every single one on time the pill is not 100% effective. If she is afraid that she is pregnant though she should just take a pregnancy test...
5. Any sperm you put inside her on March 28 would have been LONG dead by April 10 (sperm only live 3-5 days). If you didn't put any more in, you didn't get her pregnant. But her birth control is absolutely useless for the rest of this cycle.