Okay, so I've had a cough for about two weeks, and it's getting better but it's still there. (I didn't take medicine for it until after it had been there for a week). But I woke up on Thursday, and it feels like my right hand serratus anterior region is REALLY really sore. Now it hurts to cough, I can't do back extensions without really sharp pain, and forget the bench presses. Is pulling that muscle or some kind of bruising normal from coughing, or should I get this checked out? I doubt there's anything anyone can do about it really.