I think you are suffering from HA (Health Anxiety) I have HA and I know how horrible and cripling it can be. I get the symptom and leap to it's fatal conclusion

Any pain, lump, discoloration is cancer or something horrible.
I haven't completely figured out how to control it but here is some advise I gathered which seems to work.
Do NOT symptom search
Do NOT watch medical shows
When you get a symptom or start worrying about something take a brake and think about something else.. ger your self conditioned to do so.
You can find a lot of support for HA on line. Hope you also find relief.