I have feel of fullness and bloating when eating with mild pain in the upper stomach. i keep burping and makes me feel better. i feel much better when?

Upper abdominal pain: can have many causes. The fact that yours gets better with burping suggests a possible problem in the upper digestive tract. Initially, I would try using antacids such as Tums, (calcium carbonate) to see if it helps. If your pain persists despite using Tums, (calcium carbonate) I would consider seeing your doctor. Good luck.