Bad anxiety about my health

I have anxiety, bad anxiety. It’s not social or anything like that it’s more anxiety about myself. For example I make myself worried sick whether I’m pregnant literally after getting fingered or if I have slight cramps, I’m worried I have ovarian cancer or something. Please tell me if anyone else is like this, and how can we calm down and stop worrying about ourselves so much? It causes so much stress and I hope some people in the comments can give me some sort of relief with my worries.