Should I be concerned about my shoulder?

I was hit very hard in a hockey game (charging/check from behind) and thought I had broken my collar bone/shoulder. My trainer took a look at it and said it looks fine. It is about 2 and half weeks later and just to the right of my left shoulder there is a bump that is not squishy at it's center and does not seem to be simple swelling (there is some I think surrounding the bone/ whatever the hard thing is). It looks like a part of my collar bone or part of my shoulder. I wish I could be more descriptive. It hurts whenever I touch it and if I hit somebody hard in a game it will send a shock-wave of pain in my shoulder. I have full range of motion in my shoulder still though. Should I have a doctor take a look at it or simply go to another trainer and get a second opinion? Do you think it is fractured or severely injured? Thanks for your help.