Hi Christ, Look so you may not have a lot of sperms in your bladder, and the answer for that could be that you have a low sperm count, but I that you do have retograde ejeculation, cant that of anything else that could give you your problem, the pain in the bladder I think your find is from your ejeculate going backwards or some of it anyway, and you still need some further tests for the problem.
Good Luck
Hi and welcome, sorry the late reply, weekends here we dont get much traffic. I would see your uroligist and have an in office ultra sound on your bladder. That will tell you if it is working properly.