I had testicle pain for three years after inguinal hernia surgery, I ended up haveing severe nerve damage caused by the surgery. My pain was constant and only in the right side. I don't know if this is what you two might be dealing with, but a consideration. I was told I had infections and all sorts of different things. It took all of 3 years, to diagnose my problem, luckily for me I am friends with the son of a world reknownd plastic surgeon who works out of NYU and UW-Madison hospitals, yes a plastic surgeon, it took two surgeries, and I had to have two nerves completely removed, but thank god it worked, I had the last surgery in the middle of April, and I am able to lift weights, run etc. (I play college football). Again I don't know if this is what you are dealing with, but I do know that it sucks, to have the boys hurting and haave no one know what is wrong. Again my case was pretty extreme, I had two surgeries to repair 5 total hernias, and actually had to take a semester of school off to get it treated, I traveled all over the mid-west, including the Mayo Clinic in Rochester. To be honest it took my doctor, who is amazing, to take charge and really go to bat for me. I was on pain med's for 9 months once they figured out what it was, again if it is nerve pain, it should be constant and very difficult to find relief, and very very painful