Hi I was wondering if someone could help me out. I had sex with my boyfriend on the first day of my period, but the condom broke. I am on birth control but, to be extra safe I got plan b. I was wondering the likelihood of me being pregnant if I was on my period, he did not finish in me, I am on birth control and took plan b? Also when can I take a pregnancy test

Chances are good that you aren't pregnant, but the possibility always exists whenever you have sex.

Wait until your period is due, if it's late then wait at least a week before testing to get the most accurate result, also make sure to use first morning urine.

You should know though that Plan B can mess up your cycle. Read up on it so you know what you can expect.

Good luck.

Sorry for the one poster who seem not to know a lot of the facts, their post was deleted.

While of course there is always a chance it would be very very slim on birth control with plan B and during period, with him not finishing.

With that said, of course there is a chance, and yes it is always recommended to use the early morning urine esp early on.