Hi, as you have said anxiety is the main thing which can cause any disease, any symptom. As you describe it appears to be the gastric hyperacidity. may be due to the ulcer, irritant foods, etc. Pancrias also can cause such pain but will be severe.
I to my patient with such symptoms prescribe omeprazole, domperidone, and antacid gel. Thank you.

Hi ! It is but natural to be worried with the problem, specially when you have a history of diagnosed lymphoma.The pain in the left side of your rib cage may be due to the stretching of the splenic capsule by the enlargement of the sleen.You have not mentioned if you are on any drug treatment for the lymphoma by your treating doctor and if you underwent any review investigations in between for the same. If not I would suggest you to discuss with your doctor for a liver function test and a CT scan to know the status of your liver before jumping into any conclusion on the liver pathology. If all the clinical examinations along with the investigation reports are normal, then I may think it in the lines of anxiety for you and go with some anti anxiety medications on consultation with your treating doctor. However, I will not leave you without a regular review at frequent intervals, or whenever you face any such problem. Wishing you an early recovery.