Suggest Remedy For Cramps And Excessive Flatulence

Hi im a 27 year old female and have been having these issues with where i get very gassy as in burping. sometimes i wake up in the middle of the night to throw up. first starts off as light stomach cramps then vomit but i notice when i vomit usually burps come out alot. i have lost 25 pounds since of last year. and also get very full fast so i really cannot eat huge amounts. sometimes i eat a few bites then get full.