Same here... It started with a brain tumor because I noticed my pupils were not the same size. After a trip to the ophtalmology hospital where I was checked by two doctors AND the head of the neuro-ophtalmology departmend and being assured that it was nothing more than physiologic anisocoria, present in about 10% of the population. Having gotten absolutely no relief from this news I took another appointment with another doctor, who confirmed the same thing.
After that found lumps on my back, then after a trip to the emergency room completely in panic, on a sunday morning, the doctor told me they were lipomas. I checked again with my GP who decided to send me for an ultrasound to re-asure me. The ultrasound confirmed the diagnosis, nothing malignant.
For a while I had been vigurously checking my body for anything wrong that I could find. One day I got the feeling that the left side of my abdomen is bigger than the right one. A panic attack and a trip tp the doctor later, I was diagnosed with carcinphobia. It does not make me stop looking at my abdomen with panic!
Lastly, I had a cold, normal considering the weather. Then I saw that one of my tonsils is bigger than the other (no idea if it has always been like that), two trips to the doctor later, and a prescription of anti-anxiety pills later, I am still not conviced that I am fine. What if the doctor missed something, I tell myself. She said the size was not a cause of concern, not in the tonsils, not in the lymph nodes, not in nothing, the difference in size in my tonsils is nothing more than the body's asymetrie, she insisted. Why do I have trouble believing her? Why can't I be convinced? If something was a cause of concern wouldn't she now better than me???