so i had this lump for a few years now, and it didn't bother me that much until now, when it began to feel painful when i mastrubate. of course, i thought it will get away after a while yet it seems that there's still nothing happening except grow un size. can anyone tell me what this is, and if I'm supposed to be worried?
It could be a cyst I’d advise you to see your doctor. does it cause your penis to bend when erect?
Considering the longevity, likely a cyst but I would have it looked at by your physician.