I need some really good techniques to make me feel amazing just using my hands

Okay me and my boyfriend were fooling around and he came on my butt and my brother was about to walk in and I pulled up my pants really fast and if some if the sperm got down to my vigina is it possible I could get pregnant I mean I had a tampon in and I pulled it out right after

Well take a test and make sure and be careful, and use a condom. Well if you don't want to get pregnant then just use one and be safe everytime you have sex with your boyfriend k