Okay so my boyfriend and I had unprotected sex and before we had sex I gave a handjob and he came and then like 15 minutes later we had sex so I’m worried the precum had sperm in it? And like I’ve had cramps and I’m not supposed to start my period till the 27th of this month but I feel like when I think about it I start to feel sick and get cramps so idk if it’s all in my head or what