sometimes temp of the food will feel painful. Try drinking warm liquids, or room temp and if it still hurts then I would call your doctor. Also sometimes if you eat or drink to fast, it will make your pouch hurt. Chew, chew, chew and always put the fork or spoon down between bites.
I'm still pre-op, but just had to say, Wow Angel!! You have done great!! Our highest weight is very close. I so hope I can do as well as you!! Congrats!!