About two weeks ago, I fell and hit my lower arm on the concrete. It did swell on and off for about a week. I took ibuprofen and the swelling went down. I can use it, but it is very touchy especially when I move it a certain way. It seems to hurt in different places - close to the elbow, in the middle, close to the wrist - at different times. Do you think I need to have a doctor check it out? Also, what do you think could be wrong with it?