pms or pregnancy? help?

I'm 16, my boyfriend had fingered me a few times this month. The last time was last night. Under a week ago my boyfriend came for the first time ever. I was giving him a hand job and I was naked. He came on my upper stomach/breasts and my hand and arm. I wiped everything off immediately. I got dressed. I washed my hands, went home and showered. I decided I was fine after that since I literally felt no different a few days later, so last night he did finger me. So much of me knows I could never get pregnant from stuff like this. But I'm bloated. I just feel off. It's 12/13 days before my period. I know I "can't get pregnant" from this. But I could really use some reassurance. I have anxiety so I just overthink every time I do anything.