thank you so much for your reply @proliamistake!

I'm asking because 6mo before my op diagnosis I had an episode of 'chest pain' right under my left breast shooting to my back after gardening. at the time i have to sit down and the pain persisted for about couple hours. I thought I had pulled a muscle. after that episode for about half a year I would have mild pain or discomfort at that same point/area towards evening time which would be relieved if I lie down. lately I haven't felt anything. guess I will ask my doctor if she wants to double check my spine.