My boyfriend and I had sex and he busted in me and I'm on my period. Can or will I get pregnant I have already had a baby if that helps for youto answer

Not the most likely time, but if you happen to ovulate early, yes, you can get pregnant from sex during your period. If you want to lessen the odds of becoming pregnant, use a form of birth control every time you have sex. There is no 100% safe time, even when birth control is used. If you learn when you are most likely to ovulate, you can determine what times in your cycle may be safer than others to diminish the odds even more.