Has anyone ever had a problem doing behind the neck barbell presses? I usualy go in the front, but decided to go behind...BIG MISTAKE. Felt a twinge near right trap...felt like a bad crick in my neck..I said fuck it and kept training. It has been 3 weeks and no improvement. Hurts like hell to look up. Pain starts in my trap and shoots out past my shoulder. I have not missed a workout...but I worried I might have hurt a disc or torn something...any advice?? Thanks in advance.