Health fears are taking over

Lately I feel trapped inside my head. Any small pain or sensation makes me believe I have a serious illness, and then my mind jumps straight to the fear of dying. Even after doing tests that come back normal, I can’t relax, because a thought keeps haunting me — what if the reports are wrong? I feel like I’m stuck in a loop of fear I can’t escape. I came here because I just need to be heard — has anyone else gone through death phobia or health anxiety? How do you calm yourself in those moments?