I have been on nexplanon for about 2 and a half years now, and my boyfriend and I had sex for the first time together about 2 weeks ago, I am extremely paranoid that I could be pregnant considering we had unprotected sex. He says that he pulled out in time but I'm still scared to death to be pregnant considering I'm only 16... My period is already irregular as it is, so this is scaring me because I could either be late or I could just have my irregular birth control periods. Is it normal for my period to be a little off if I'm stressed or am I pregnant?