About a month ago I had injured myself weightlifting. When the injury occurred there was a loud pop in my shoulder, and it hurt pretty badly for the rest of the day. I decided to wait and see if it got better, but it did not it was always achy. It also gets worse when I sleep on it, or do physical activities with it. In the past week it has also gotten significantly worse, and I believe it is from lifting and playing catch with a football. Should I go to the doctor to get it checked out?