Is this normal or some kind of disease?

I have this problem whenever i eat some oily or drink something with gas in it like coke, i begin to feel this sharp pain in my back/stomach which gets worse and soon makes it difficult for me to breathe. It usually stops if i take this pill my mom gives me or if i puke. It only used to happen once in a year buh now it happens almost every week and before it can get any worse i take the pill. i was wondering is this a some kinda disease or normal?