Under normal conditions, sex after 3 days of periods does not leads to pregnancy but exception can be there. Whether he is infertile or not if you don't want to be pregnant then don't take any chance and take morning pills.
I'm on a 23 day cycle period when do I ovulate and how do I no when I ovulate
You can get pregnant anytime!!during your period , the second it's over, anytime, anytime at all
Thats messed up you had an abortion. Maybe you shouldnt have sex with out a condom. Thats how you get pregnant. If you don't want to be pregnant then have safe sex.