Struggling

I have thought I had mouth or throat cancer for a couple weeks now. I have cobblestone throat (possibly from nasal and dryness issues) and bite my cheeks accidentally so have some spots on my cheeks from that. Both of those convince me that I have cancer. Today I coughed up some phlegm and it had a very tiny amount of blood in it. Like barely even visible. So now I believe I have lung cancer. Every day it seems I convince myself I have a different cancer and it’s hard to function at times. This year alone I’ve convinced myself I have testicular, colon, mouth, throat, and lung cancer. The Dr in the past has offered to give me anxiety meds but I’d rather not go that route. It’s getting harder to function when every little new symptom or feeling sends me into a panic. Any tips or advice would be appreciated.

Thanks for the responses. I am usually pretty good at controlling my anxiety and knowing that my fears are unrealistic. I have no family history of any bad diseases and am pretty young (28) so I shouldn’t be having these thoughts. But it is getting increasingly harder to function properly especially when any new symptom or new feeling can make my HA flare up bad.