When I was younger (probably about 8 or 9), when I started to learn about various diseases like cancer, AIDS etc. I started to become a little anxious all the time. I was usually always paranoid about getting food stuck in my throat as well for some reason. But this didn't last for that long although when I did get a problem, I would usually worry a little too much but never to the extent of worrying about dying.
But recently, after getting a severe sun burn (blistering and peeling), I looked up skin cancer and started worrying about having skin cancer. Then after a month of no worries, I started to get daily nose bleeds. Since then (July), it has escalated to what I would call severe health anxiety.
Every little ache, I fear either soft tissue carcinoma or bone cancer. If my joints ache, I fear leukaemia or myeloma. For every little blemish on my skin, I jolt right back into fearing about skin cancer. I recently had a sore throat for about a week; I feared of it being either oesophageal, oral or thyroid cancer.
I recently started to get chest pain and indigestion; I feared about it being stomach cancer. Whenever I have bowel movements, I am constantly checking to see for any abnormalities and whenever there is, it is obviously bowel cancer in my head. Whenever I go for a shower, I am checking my skin; also for any abnormalities. Any blemish that persists for more than a week with no change is automatically a sign of melanoma to me.
As of now, a couple of times that I have taken a breath, a little tickle has been accompanied in my right lung - I now am starting to have a mild lingering fear of lung cancer.
I would say the worse part about anxiety for me is how tiresome it actually is having to go through constant worry after worry.
After reading about your past problems though, I feel that based on your experience, your anxiety is kind of warranted compared to mine. My anxiety just struck me out of the blue for no real good reason - you however, I feel your anxiety has developed due to certain experiences that I would generally say are a cause for concern.