i know that first hand*trust me* i was on my period and i got pregnant. And i didn't know i was even pg *pregnant* cuz i had my period 2 months after that. It's all depends on your guys.*sperm* Cuz if you drink alot of caffeine or monster*its a drink* or coke.It can help your men to last longer then they suppost to and if she ovulating.Dude start covering....i know it feels good without*trust me im a girl and i know* pulling out is not always safe and not fun too. Either get your girl on the pill or the shot. The pill is good and she still gets her period. Or the shot*which im on* it covers the girl for 3mths and u dont have to pull out or cover*unless you both are tested*
.So i hope i helped a little bit.