2 weeks ago I was working on my bike carrying heavy stuff that day I did cocain, and had an anxiety attack because I notices my my left upper pec. Was swelling up getting bigger then my right pec, and I'm right handed....?? So I panicked when to the doc. And they said it was a panic attack and that I was probably imagining it it has been 2 weeks now my left upper pec is still swollen hasen't really grown, but I feal tightness, and spasms..... I'm scared to go to the doc. Again....what could it be, there is no pain?