How likely is it to get pregnant if you have sex during your period but at the very end of it? I'm on birth control but it was my week off so I'm pretty sure it's inactive then. Also, we didn't use a condom, but he pulled out.
Being on the pill protects you equally through out your cycle. Pretty much it tells your body that you are pregnant when you really aren't. That means you don't ovulate, what your period is when you are on the pill (and off for that matter) is your body shedding the lining of your uterus. Just on the pill there is no egg to go with it.
it is always possible, but very low chances..