I had open heart surgery in Aug. 2016. In Dec. of 2016 I was diagnosed with Non-Hogdkins Lymphoma. About April of 2017, during chemo, I started having an itching in my left shoulder blade. Eventually, it moved under my left armpit to my chest muscles and began aching, especially after I ate. Chemo ended in June and, after 2 Pet Scans, I am clear. It is only on my left side and it comes and goes pain wise. Today was especially bad as I woke with it and it has persisted most of the day. I have a DR. appointment with my primary doc tomorrow. What should I ask or tell him?