I keep convincing myself I’m pregnant even though I’m a Virgin

Something is just wrong with me. I’ve never had sex or direct contact with a boy, and literally the only thing that could of happened is when I was in the club and grinding with guys. But they were wearing clothes and we didn’t have sex?? It would be impossible for me to get pregnant then. I’ve just beeen freaking out I’m pregnant and I just want to stop. I even bought a pregnancy test and it was negative. I’ve literally had two periods since then also. That was supposed to give me relief but I read women can get periods while pregnant? My stomach got a little bigger and I keep worrying “omg am I pregnant???” But I know its just bloating. My uterus region got harder and I got cramps and I keep thinking jts pregnancy. It’s been 13 weeks since that night and I only have a little bit of a stomach. I have no idea how to stop thinking I’m pregnant. I’m so convinced for some reason, its all I think about. And I really don’t want a baby, AND I KNOW I won’t have one but I’m just so stressed. How do I get this shitty thought out of my head? I really hate it. This is not a troll, pls somebody just ease my mind