Hi I am a 24 yr old female, for the past fre hours I have had pain in my left shoulder up to my neck, pain down my left arm, a numb left hand, and pain under my left armpit and around breast, it also has been painful when breathing out... lying down in bed is too painful so I am more comfortable sitting propped up where it is mainly the arm pain and under armpit pain, i thought it might just be muscular but could this all be IBS related? I have had not so good bowel movements today and am gassy now.... Thanks