Hi.
Thanks for your query.
Noted the history and understood your concerns.
Pain in abdomen n the top for the last few weeks along with pain radiating to the back can be due to the following reasons:
Gastric ulcer on the posterior wall.
Pancreatitis.
Or rarely the lymph node mass or some problem in any of the retro-peritoneal structures of abdomen.
I would advise you the following in such a situation:
Get the clinical evaluation by a Gastroenterologist.
Upper GI
Endoscopy to rule out gastric and acidity related problems.
CT can of the abdomen to see for the
pancreas and other structures.
Relevant tests of blood, urine and stool.
Get started on appropriate medications as advised. PPI like
Pantoprazole, antispasmodics and painkillers as needed.
Liquid diet.
Further management as per the reports.