My injury was a little over two weeks ago. I heard and felt a pop, then a crunching sound when it happened. I went to a walk-in clinic, where the PA diagnosed it as a strained pectoral muscle. Since then, I have had a lot of pain, enough to disrupt my sleep, and I am unable to do most things with my left arm. Should it be feeling better after two weeks? Is it possible that the injury was more than just a strain?