I haven't ever had an ulcer, but I do have a history of IBS and stomach issues. First I should say, you should consider talking to your doctor to rule out anything serious. I experience these types of stomach problems and for me it relates to such things as taking ibupfrofen which is very hard on my stomach. I have to take something like Pepcid or Zantac 30 minutes before ibuprofen. Black coffee is a killer (with cream is fine). Raw vegetables like brocolli, peppers and cucumber skins will induce this pain and it takes the rest of the day to recover. Extended extreme stress (which is rare for me). Once my stomach is aggravated, I have to be very careful not to over eat. It just compounds the problem. The bloating, sharp stomach pain and in the upper part of my back are almost unbearable. I've learned what sets it off which took some figuring out, but I've got it down pretty good now.

Oh yes, I do get air/gas in my stomach and once it comes up I immediately feel better. Unfortunately it is just followed by another "bubble" again. The ibuprofen induced pain is one that tends to wake me in the middle of the night. Sometimes I have to get up a walk around because it's so intense it drives me crazy to try and lay still.