Hi Chitra Das. Thanks for your query. Your history of pain on the left side of the naval, increasing after tea and reducing after eating something is suggestive of Gastric Ulcer or cancer. USG is of no help in such diseases. Since you have not been much benefited with Antacid, albendazole, Rabeprazole, you need to undergo the following investigations ; Upper GI Endoscopy and CT scan of abdomen to get a correct diagnosis , then only proper treatment is possible. Consult a Gastroenterologist.