Am I pregnant??

So I’m only 16 had unprotected sex on September 14th, (been 12 days) I think there’s a low chance of me being pregnant but of course I didn’t use any protection (pulled out way before he came) but I’m worried about Precum because I’ve heard if he had leftover sperm there can be some in the precum. So this weird thing has been happening where my nipples feel like they are being pinched/ little needles being put through especially when cold so I looked it up and every single response on google was from a pregnancy forum saying that it was a symptom. It’s doesn’t feel like a normal tingle when your nipples are hard it HURTS. I know it’s sooo early and I don’t even know if you can tell this early but yeah. I did have a bizarre craving for raw fish that lasted a few days, still kind of crave it. I forgot when I had my last period but I think it ended around a week before I had sex but I’m not sure. I have very tiny scabs on my nipples as well?? I have also been super bloated. I didn’t take plan b and not on birth control.