I noticed awhile back (unsure of the time frame) a lump on my left testicle, it felt more like a skin flap because it was able to be shifted slightly yet it was attached to the testicle. I let it go based on things i had read online, thought nothing of it, the sites claimed it would go away. Its still there, it hasnt moved at all, it doesnt give any discomfort or pain, its just there. Tonight i was doing a check, and found a similar lump on my right testicle, it was not there last night. This lump is not like the one on the left, this lump is hard, and when I press my testicle against the wall of my scrotum, the lump looks white through the thin layer of skin. Its hard, if i try and squeeze it, it hurts slightly, but that could just be from squeezing the testicle, I am unsure. Any advice or answers as to what this is would be very helpful. I am 28 years old, 3 years ago I had a kidney stone the size of a small orange removed through my back, during that time I had a UTI at one point, but it was cured. Just trying to give alittle medical background. I have not been sexually active in 4 years, so I do not believe it to be an STD, since i have been checked more than once in that time frame.