hey jer,
i did in fact have 3 scrotal ulstrasounds done over the first 2.5 months of my pain. the left epidiymis was a bit bigger than the right. but of course that can also be due to swelling from an injury (either to the testicle/ep itself or perhaps a related nerve) or a bacterial infection. if they never found bacteria in your urine or other cultures, i would think that a ur would rule out bacterial infection. the drugs probably did their thing by now if there was a bacterial infection.
my pain was at very first the ep on the left side. also hurt in the general area just left of the pubic bone.
also hurt very badly in the lower abdomen/groin in two spots but also on the right side a bit. the pain was pretty diffused although all i could really focus on the most was the testicular pain, as i am sure you and most men could relate.
before long the pain had really spread into the left side of the perineum, the pubic bone, lower back, and an area that i would sort of describe as "deep tailbone/groin." and of course the lower abdomen really hurt. as the pain spread it involved my adductors, hip, and the SI joint and sciatic nerve became extremely painful.
the pain started at a level around 8 or 9, then after 2 weeks of cipro it settled down to around 3. i thought i was all better, and being the outdoors freak that i am, i went on a long snowshoe. got much worse after that.
over the next 4 or 5 months the pain jumped up to a solid 9/10 all the time. as some others diagnosed with a sports hernia have posted, it was nearly impossible to get out of bed without first sort of rolling onto my side. bending over was impossible as was lifting or pulling anything (even to pull the sheets up in the bed). basically anything that required me to engage my core muscles (psoas, abdominals).
the docs (i saw many, many of them, and had Pelvic CT Scan, Lumbar MRI, Cystogram-dont get that one done-, and eventually a hip and SI joint MRI) couldn't figure out what it was. i got many educated (and not-so-educated) guesses as diagnosis.
apparently a sports hernia is something that can build up over a long period of time, and then one incident can happen where it finally becomes a problem (like an accident). then the pain will gradually get worse.
the other areas of my body became problematic since the injury and lack of diagnosis yeilded massive musculoskeletal imbalances. by that point the docs had no idea.
don't let it get to that point if the pain continues or comes back. apparently there is a great doctor in toronto who is decent at repairing sports hernias. i am choosing dr muschaweck because she diagnosed it and she is the world's best at the surgery. 14,000+ surgeries to show for it. it will make be broke but believe it or not it is cheaper and simpler than the sports hernia doc in philly (meyers). so it was a no-brainer for me.
good luck and i hope talking about my own experience has helped you and others.
i will check back and post more after i get the sugery in a week and a half. i'm really excited in case you can't tell.