Help think I'm goin crazy

Ok guys I no I have posted a few times be for about anxity but I need to no if this is normal
For the last 2-3 months I have been is feer of dyeing I keep thinking I have cancer brain tumor bleeding on the brain flued on the brain heart failer liver failer kidney failer strok lung cancer mouth cancer bleeding in the gut I have been to the hospitel at lest once a week and that all think I'm crazy I've had a lot of blood work and ECG and eckos done and all have come back fine I do suffer from panic attacks but I think it cold be somthing more like helth anxity here is my symptoms
Headace
Sharp head pain that last for a few sec
Dizziness
Light headed
Dream like state
Memory loss
Brain fog
Chest pain
Arm pain
Leg pain
Feeling sick and vomiting
Runny stool
Feel week
Like my limbs have no enrgey
Bad sleep lucky to get 4hrs a night
Racing mind
All ways thinking I gotta go to the hospitel
And all ways worrying that I'm goin to dye

I no that yous can't give me a proper answer as yous ain't doctors but won't to no if any one has this problem I've been to doc after doc and to 2 different hospitals and never get an answer I'm starting to think I'm goin nuts and 90% of the time it's worse at night