Paranoid

I'm on BC and had been taking it like I was supposed to, only an hour late once, had sex without a condom, he pulled out but I'm still worried I could be pregnant? I'm bloated, but I've had that issue before, it could also be weight gain as my lower stomach isnt super solid. Please help me ease my mind... Could I be pregnant or just super paranoid

Also I've had my past two periods since the last time I had sex but I just feel yucky and don't know if that has to do with it