I’m in a constant worry there’s something wrong with me. What should I do?

Anything that ever happens to my body I think I have cancer or some type of life threatening illness. I go to the doctor periodically, always on my phone looking up stuff, and bugging my my step mom (she's a nurse) about my symptoms. I see people on the news and people i see on social media getting diagnosed with leukemia. And I'm just living in this constant fear of my health and I don't know what to do.

what are your symptoms

it could be anything, from random bruises, extreme fatigue. But I’m also getting off of depo after a year and a half, my body is just acting crazy. I just overthink my symptoms of what they really are and get really bad anxiety.