What did I do to my shoulder?
Whenever I move suddenly or quickly it hurts a lot. It started maybe 3 or 4 days ago. I twisted my shoulder a weird way when I was helping my grandpa move something. At first it hurt a lot but then it stopped hurting so I didn't think anything about it. The next day, it noticed this starting. Also, it sometimes hurts when I don't move suddenly or quickly. So it seems like it's completely random when it hurts and when it doesn't. I weight lift once a week, at it has gotten worse since I did it Friday.