Pre cum?

My and boyfriend and I got heated on the 7th. I have really bad anxeity and panic attacks. We are both 16 and im freaking out because yesterday morning i had an anxeity attack and felt nausea. Its currently 12:46 am June 9th my period should (needs to) arrive next week. Im freaking out. He didn't exactly cum in me but we were messing around and you precum and grinding and stuff. Im freaking out. I havent been feeling well. How can i calm down I've been reading on the internet that its slim but a possibility (im also on the pill and he didnt wear a condom first time doing anything like this) am i over reacting? God i hope so. I need to stop this feeling. But how???

-Freaking.out.too.much