Approximately two weeks ago I completed the prescribed medicine to treat a urinary tract infection. I have since had sex a few times without complications, including last Sunday.
On Tuesday however, I was receiving oral sex from my girlfriend and she stopped a second to get her breath and when she started back I felt a burning sensation in my testicles and I immediately ejaculated.
The ejaculation burned, but the urination post sex did not.
I did not have any sexual activity the next day and on Thursday decided it best to try it out again and see if this was an isolated incident or something more serious. Everything was normal except for the ejaculation, which burned again, but with less intensity. The coloration and volume of the semen was normal.
Again I sat out a day and tried it again today and I did not have any burning sensation, but I can tell that something is still awry. There is a slight mass above and below my left testicle and it does not seem to rest in the same position as my right testicle. It does not feel too solid, possibly like a vein? It has been there since the initial incident.
I do not have any discomfort except for when I ejaculate, which is why I have not seen a doctor. And now that the only thing persisting is a lack of uniformity of my testicles, I'm having a harder time plopping out the family jewels to a doc.
This is not STD related... I've had a long term girlfriend and neither of us messes around.