My wife had to blackmail me into going to the hosp. My truck was in the shop and she was taking me to work and picking me up. When she picked me up she said I was not getting home unless I walked w/o going to the ER first. I got the upper GI series after drinking a hideous milkshake contrast (barium). The duodenum was three times the normal size and if it ruptured the blood loss would have been deadly.
So it is nothing to mess around with and is very likely worse then it feels.
(Don't even ask what line of work I was in at the time)