Sorry...horrible pun. I couldn't resist!
Hurt my shoulder learning to do a forward roll in taekwondo about a year ago. It hasn't been quite right since, so I finally sucked it up and saw a shoulder specialist today. X-rays, the whole shebang. Apparently I have bursitis and also inflammation of the acromioclavicular (AC) joint, which is the same one that is affected when you have a separated shoulder. Himself separated the hell out of one of his shoulders a few years ago playing soccer and was completely miserable while it healed, so in the grand scheme of things, it could be a lot worse. But I did end up getting two steroid shots directly into the joint, which were no picnic either! Ouch. Hopefully they will actually fix the problem.
The only silver lining is that I am not allowed to do push-ups for the next two weeks. A small boon, but I'll take it.