I hope this reply I sent to another member of this forum can help. Her symptoms are pretty much like those we all experience:
I had incidents like yours throughout my young life as have both my daughters

There is hope.
One thing that was of major importance in my process is that I was finally diagnosed with OCD (the obsessive worry, thinking, etc). I had been suffering for a number of years. They did not have SSRIs when I first had started having obsessive thoughts with panic attacks. When I started Lexapro, my life turned around. I could finally enjoy my life. I was in plenty of therapy but my first therapist missed it completely. It was not easy--lots of hard work, therapy, and trying a couple of meds. Of course I wish I did not have to take meds, but I do if I want a life worth living
No telling you what to do but life is short--I wish I had not suffered so those couple of years that got really bad.
What I have learned (and I bet you know underneath:) is the issue is not whether you have cancer--its the compulsive thinking. When you have the thoughts can you tell yourself something like the real issue is the compulsive thinking, not the disease. I have "had" several types of cancer, esp breast cancer, MS, and brain tumors. I have spent way too long looking at my skin for cancer, I have had mysterious diseases I have read about, lumps here and there, fear of HIV. I know about all kinds of diseases. Also thought I was going crazy.
An amazing statement hit me on a podcast....something like you can't fix your
problems with the same organ that causes your problems--the brain of course. You cannot think yourself out of these problems as much as there is that strong drive to do so.
I wish you the very best. Advice from someone who has lived a long life--get to a good cognitive behavioral therapy. I strongly suggest looking at meds-perhaps SSRIs. Looking back, I have no problem with meds bc my life was changes so drastically for the best.
Best to you!
Tracy
-- Wed Sep 21, 2016 11:44 am --
PS-try your best not to go online looking at diseases. I know this is hard.
T