I think every little bodily abnormality is cancer...and i stress about it. i can do everyday things, but it is always on my mind. advice?

This will help: First, read up a little bit on how cancer is likely to announce itself in a 37 year old man (mass in the testis, obviously abnormal neck mass, stand-out skin / mouth lesion, blood in the urine, etc). Second, cut your risk by avoiding tobacco and practicing surveillance. Third, a short course of cognitive-behavioral therapy to study and master this working of your mind. The latter gives you power.