Overcoming pregnancy fears?

I see a lot of posts about insane pregnancy fears so at least I’m not alone. I’m not having sex again for a long time because my anxiety of being pregnant is so awful. Mine is completely unreasonable, it’s been since November that I’ve had sex and I’ve had a heavy period every month, negative tests, even went to the doctor to get on birth control so I had a pelvic exam and got tested there too and I’m still worrying whenever I feel bloated or have really bad gas or back pain or any symptom like that.

Basically just asking if there’s any advice for overcoming this fear?