Hello
Thanks for query .
Pain in stomach after eating radiating to higher back can be either due to muscle spasm ,hyper acidity or pathology in 
Gall Bladder or 
Kidney (Mostly stone) and needs to be investigated .
Consult qualified 
General Surgeon for clinical examination and get following basic tests done to confirm the diagnosis 
1)
Ultrasound Scanning of abdomen .
2)Endoscopic examination of upper G.I tract (Gastroscopy).
Try following general measures 
1)Take H2 receptor antibiotics like Pantaprozole twice daily 
2)Avoid oily , spicy and junk foods .
3) Take 4 small meals at frequent interval of 3 hours instead of two heavy meals
4) Include sumptuous quantity of milk and curd in your diet 
5) Take green vegetables and fruits.
6) Drink adequate quantity of water 
I think this should help to resolve your problem .
Dr.patil.