What would happen if I went to a doctor for this?

A year and a half ago I was trying to punch my brother because he hit me in the stomach with a shovel but he blocked it and I hit the side of my hand on a post instead. Hard to understand how I did it, but anyway I fracture my hand. I never had it put in a cast or brace or anything and my hand still really really hurts. I can hardly use it, and I have no strength left in it. I can't even hold hands with my boyfriend because it hurts too much. :( I can use my thumb and the next finger as always, but if I try to use the others it kills. Sometimes I seriously fall to the groud clutching it and nearly crying. It hurts a lot. I had an x-ray about 4 months after I fractured it, and they didn't see anything and sent me home. Which really ticked me off because obviously it's not okay. I just went to a walk in clinic. If I went to a better like at the hospital or something would they be able to see anything in an X-ray? What would they have to do to fix it? I'm absolutely terrified of doctors. I had an X-ray when it happened, that's how I know it wad fractured. But I had a driving test coming up and I couldn't be in any sort of cast so I sucked it up. Which I really regret now. The thing is, I'm an avid photographer and I plan on getting a degree in photography. I need my hand for that (it's my right hand) and I don't think my hand is even going to make it through college, because it's just getting worse every month. So, how awful would treatment be for my hand and how would they fix it? Would I need to some stupid specialist? I really am terrified of doctors.