First off I'm a hypochondriac so anything involving health freaks me right out. Three weeks ago I found a small what seems to be a bump on the bottom/back of my left testicle. I went to the doctor and was scared it was TC. He preformed a check for any lumps and didn't find any. He said I had nothing to worry about and that we're no bumps. He said I could go for an ultra sound if I wanted but I trusted his expertise.

Today I still feel the small bump behind my testicle as during the day it comes and goes as my scrotum gets harder or softer, so it's not always there, I've read on the internet like crazy and see that it could be the tail end of my epididymis, is this the case? I just have never felt it before a couple weeks ago and it's creeping me out. I just need to know