Ive had moderately severe gastritis in the past and dont think it ever really went away. Ill get sharp almost stabbing pressure on either side of my breastbone and I get dull pains or pokes in my whole upper abdomen and back, shoulder blade area as well. I know this could be pancreas , liver, gall bladder , stomache ulcer , etc. Ive also noticed Ill get slight dizziness sometimes. Also if I drink alcohol then the next day when I eat I will get really tired and have a faster heart rate. Doesnt happen all the time and mostly if I had too much to drink and have more carbs in that meal. Any ideas?