A dislocation doesn't show up, usually because it relocates right away. Honestly I would check in with a PT or a chiropractor. Believe it or not I have had more luck finding out what is wrong with my body from them then from normal doctors. When I was 18 or so I messed up my shoulder. I went to the top orthopedist in the area and he said "there is nothing wrong, it's just a muscle spasm", then he sent me to PT, they took one look at me and sent me back to him (Same building) and he said.."oh it's just a strained tendon....back to PT...and again they sent me back to him telling him that there was more damage then he thought. After about...ohhhh 5 months of this I was working with a friend who happened to be a message therapist. I was rubbing my shoulder and he came up behind me and started to message my next and shoulder, then felt down my back and said "You know you tore your trap muscle?" I was like..."did not, my doc says it is just a pulled tendon"...he says..."Noooooo I can feel the space in the muscle where it is torn apart. Then he pushed on it..and ooowwwyyyy....I went back to PT told them what he said, they sent me to the doc who FINALLY really took a look at me and said. "Oh yeah, you tore your rotator cuff, your trap muscles, and damaged the nerves in your neck. When I asked him what I should do he says..."You waited to long, there is nothing we can do about it now"....If looks could kill that man would be dead.

The Second time a doc was clueless was when I injured my knee. They did MRI's and he said.."Oh it's just a strain, go to PT"... I went to a new Physical Therapist who took a look at the MRI and said..."You tore your minicus" NO I didn't! The doctor said it was a strain!...Then he pointed out the exact place, plain as day on the MRI where it was torn. Even I could see it. He then gave me a card to a new doctor. I learn right then that the best people to find a doctor from are PTs because THEY see the patents after the surgery's and they know which ones make full recoveries, and which ones have to do more surgery because the surgeon was clueless. The new doc had me in surgery ASAP and my knee is all better.