I was very "excited" today but unable to do anything about it, so when I got home I immediately masturbated. Following ejaculation I noticed my left testicle ached a bit, and about an hour later I noticed the cord or epididymis has become swollen. An hour later and it has not changed.
There is a small amount of pain but it isnt affecting normal activities. Im very worried though. What should I do? Should I be concerned or is this normal after large ejaculations? Thanks!
p.s. Im 20 years old