I am going to the doctor but i am so scared. i have indigestion almost every day out of nowhere. pressure in the upper epigastric region, burping a lot, which helps. i am now eating bland. what could be wrong? i don't smoke i'm afraid of cancer?

The more common cause of these symptoms is simple backwash of the stomach acid up the swallow tube. The stomach is a muscular organ and the squeeze it places mixing foods can push fluids back up the swallow tube. There is no valve there, just a fold. Try not laying down after meals, avoiding caffeine and take some antacids. Go see your doc. I don't go to dark answers when simple is more likely.