I'm on the same injury boat as Boogie and Stro.
Mine's with my left elbow which has now been going on for month six with no sign of improvement whatsoever, and things getting possibly worse even. The pain that was mainly limited to my elbow has now started encompassing my upper arm as well. When I went to see a doctor about this stupid issue back in February, they figured it was a pinched nerve. It might be the case, but we never did any tests that would make it absolutely certain that was the case. It could be a pinched nerve, it could be tendonitis, it could be bone spurts, it could be a dozen different things. I'm going to go see a different doctor on Tuesday (not cause I think the previous doctor did a bad job per se - at the time, it might have seemed like a reasonable assumption - but cause they're on vacation for the next few weeks) and hopefully I can get another, more accurate diagnosis.
My fear is that we might not be able to know for sure without me having to go through an MRI. And considering those are expensive as fuck, and me not currently having insurance (I went through my university this past year, which I'm no longer a part of since I graduated), that makes for a very shitty combination. The first doctor tried to look via ultrasound but couldn't find anything visibly wrong. Maybe we can give it another shot since things have gotten worse and if something got torn or inflamed, it might actually be visible now.
This is the longest injury I've ever had, but like I mentioned, the worst part isn't the length of time I'm been afflicted with this, but whether it'll be healed at all without resorting to severe measures. At this point, I don't even care if it'll take another 6 months to heal, AS LONG AS IT ACTUALLY HEALS AT SOME POINT.
I started lifting because I wanted to stop being a skinny loser and also make myself attractive to the opposite sex. But as time went on, I honestly began to enjoy lifting for the sake of lifting. I actually LIKED going to the gym after a while. It was no longer a chore. It's actually one of my favorite past times nowadays. And the fact that I'm already locked out of doing most press exercises and that it's looking like it's going to be extended further to ALL arm exercises makes me fucking depressed.