I had a chest workout yesterday. After that I felt a pain in my right pectoralis, pure muscle pain, injury. Today the pain is still present. Really strong pain. My friend is telling me that I breaked a limit, thats a good thing. But I still think it is an injury. I had proper and slow movements while benching. Do you think this is something I should worry about? Of course, I wont do chest a few days. I think it is because I had a great progress last 4 weeks (+25lbs on bench).