Is this an indication of a labral tear?

I injured my left shoulder in football my freshman year in High School. I continued to play on it because it didn't hurt too bad, I thought I had maybe just strained it. But then I hurt it again and this time when I made contact with someone, my entire left arm fell numb. Even after this I continued to play, but my shoulder was always in pain and was doing weird things. I took ibuprofen for the pain, and now when I would angle my shoulder in a certain way, it would feel as if it slides out of place. It shows up as a bulge on the outside edge, where if you normally put pressure, is right below where the bone of the shoulder is in between the arm and shoulder. When it comes back into place it pops really loud.

I have since quit football and I am in my Junior year now and it seems my shoulder is getting progressively worse. The continuous pain it normally has giving me over the years is increasing dramatically.

What do you think this is?