As before, it's uncomfortable but usually not terribly serious. The usual treatments for this (besides the antibiotic) would be wearing very supportive underwear to keep the testicles elevated, avoiding sex or masturbation for now, and probably they might advise putting a cool wet washcloth on the testicles to reduce blood flow & swelling there. Hopefully the next ultrasound will reveal something that helps the medical folks find a cure for you. As I said earlier, it may take a few weeks for this to go away completely, even after finishing the antibiotics. But better advice than I can give is to listen to the medical professionals. If anyone reading this has extensive medical knowledge & training, please jump in and advise Ramdom...