Upper back/shoulder blade pain / Chest CT & CT angiogram

Last year, I went through TC chemo and then 30 doses of full chest, armpit radiation. During radiation, I developed a weird feeling in my back, directly behind my affected breast. It's near the bottom if my scalpula. If I squeeze my shoulder blades, there's discomfort in that area.

During that time, I had a ct angiogram with contrast and 2 chest CT scans. My oncologist feels like that pain is from surgery & radiation. (I had a full pet/ct 3 months prior which was clear.)

The issue is, I still have this feeling, a full year later. Sometimes it goes away but right now, it's pretty flared up. If I sit back against pillows or lay on my back, it gets flared up.

I have to sleep on my side, hugging a pillow in order to not feel the pain.

Had anyone else had this and it not be mets? Can the ct scan see my spine and shoulder blade? I have constant anxiety about this. (I will say, I had a lumpectomy and the area of my back, directly behind my breast had zingers. I mentioned it and they said that's odd. We'll now, that's the area with the pain. I had a massage and she mentioned I have a knot below me scalpula but the massage didn't help. If anything, it made it worse for a week or 2 afterwards. )

If I had to describe the pain, it would be hard to explain. Theres sometimes tenderness when i squeeze my shoulder blades together. Otherwise, it almost feels like a pulled tendon/achy feeling in that spot. Sometimes, even wearing a bra bothers that area. Other times, I have been itchy there.

I will be seeing my oncologist next week and we will be talking about thus as well as PT and lymphatic massage referral.