hey guys i just got back from the gym and while doing close grip bench i noticed a pain in my left area, rve my arm pit, i tried to stretch it out and it still hurts like a bitch, if i make a fist with my left hand i cant even press it into my right palm without it hurting like a bastard, nor can i switch hands and take the pressure from my right fist....what might this be, i'll post a pic of the area in just a second