I am 21 and I have not had sex with a girl in the last year
Last Sunday I masturbate around 4 times and now I have a lump on my penis
Its on the left shaft, its not on the skin, I think its on the internal (tunica albugina?) because when I move the skin the lump continue there
I have no pain when my penis is not erected but I have pain when its erected.
Colour its normal and I have a good hygiene.
What can I do?
Thanks