So i had sex for the first time two weeks ago, it was at a family party haha oops but we didnt use a condom.i was on my last day of my period, just spotting. The sex was very short, around 10 minutes and he didnt cum at all since we sorta got interupted...i know about precum so thats whats freaking me out rn but im not sure if he even precummed if it was so short? Is the chance of pregnany slim then for me?