Hi Kate,
I agree with Kerley, that sounds awfully painful. However the symptoms that you describe really sound to me (remember, non of us are doctors here as far as I know) that there MIGHT be a problem with your Ulnar nerve. My neurologist also said that it is very well possible that you don’t see a thing on an xray since a nerve is soft tissue. Any damage to it may cause pains. Maybe you are a curly sleeper (as in keeping your arms curled up while sleeping) and that is what is causing most of the pain at night? There is a difference of night and day painwise for me. If I don’t prevent my elbow from bending at night I wake up after an hour or two and I can start my day with 2 aspirins

I wrap a towel around my elbow to prevent that, but I’m not sure that is a good idea with a fracture to the elbow. And you say that your fingers feel weird right? The pins and needles feeling that you describe is (I guess) the same feeling I have in my hand. That smells like an Ulnar nerve problem. If I were you I’dd go back to the doctor if your pain doesn’t go away.
Anyway the best of luck for you and don’t be a stranger here, we are all interested in your progress (at least I am). Good luck and greetings,
DJ