I know I’m freaking out over nothing but...

I’ve been super thin for like ever and so now I’m stressing out because I’ve started to grow a belly and I’m sexually actively as well and the way my stomach is bigger looks like I could have a baby but I think I’m just tripping. I use a condom every time so I’m protected and take birth control but I’ve messed up this month but this has been for a while and I think I’m just bigger than what I’m used to being and that’s because I don’t play sports anymore and Work at McDonald’s. So if anyone has this issue please tell me I ain’t pregnant lol as much as I’d love to have a kid I can’t rn. I’m sorry that my butts in it. I tried to hide it.