Ok so a few days ago me and my boyfriend got heated and we didn't have a condom so we were doing a lot of oral and foreplay and I just couldn't take it any longer and I wiped his entire penis down until it was dry and stuck it in, it was in for at max 10 seconds. I'm supposed to get my period Sunday but I'm just a little nervous if I could be pregnant (I'm not on birth control) and when he pulled out I couldn't tell if there was any Pre-cum or not. I'm just really nervous.