Why is my stomach burning so bad?

This started yesterday. I'm a 30 yr old female. I started feeling a burning sensation in my stomach. Kinda like when you swallow a sip of an alcoholic drink. It's constant and does not go away with anything. I've tried Tums, prevacid, and even milk. In the center of my abdomen, not far from my rib cage, it feels like there is something just sitting in there. Every once in a while it feels like it spasms. Kinda like feeling a baby move. Makes me feel bloated and full. I've had a few very small BMs in the past 3 days. Seemed kinda constipated. I don't have a gallbladder any more. What would cause my stomach to burn continuously and nothing helps ease it? Should I go to doc?