### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Sharp stabbing pain in left side of chest, originally believed to be muscle or lung related. But suffered from severe gastritis this year and in the last week (same time as sharp pain) has re-occured (burning sensation, horrible taste in back of throat, churning stomach). Dark stools. Ive been to the doctor and she prodded my belly and side and used the stethoscope to check my breathing and said everything was fine but did not think to mention the gastritis. is it possible that the pain in my side is due to the ulcer? It is not constant, it occurs all of a sudden, lasts anything between 5-15 seconds but has become more frequent over the last week and today has been accompanied by pain in the left side of back in same area. What should I do? Ive been very ill the last year with suspected UTI symptoms but tests concluded it wasnt UTI, gastritis, chicken pox, missed periods etc and am unsure what to do.

### output:

Hello rearward welcome to Chat Doctor.come have evaluated your query thoroughly.* This is most probably in relation with underlying bleeding gastric or duodenal ulcer.* Needs confirmation with upper GI endoscopy for precise management.* General guidelines for better outcome Prefer soft, light, bland, vegan diet till possible. Consume more of whole grains, cereals, pulses, legumes, organic fresh fruits. Avoid all oily, spicy, non veg, hot beverages, junk foods, hot beverages Avoid over eating, prolong fasting. Avoid resting up to 2 hours after meals. Fix your timing of breakfast, lunch, dinner till possible. Avoid late night parties, dinners. Keep the head end of the bed elevated for 30 degrees when resting. Have regular walking in fresh air, exercises, YOGA. Avoid smoking, alcohol if consuming. Avoid stress, anxiety. Maintain to have regular sound sleep of 8 hours. Intake of Proton pump inhibitors as omeprazole or pantoprazole on empty stomach 1 hour prior to lunch ; antacid syrups as Atlanta or others according to the advice of your doctor helps. Hope this clears your doubt . Wishing you fine recovery. Welcome for any further assistance. Regards dear take care.