getting sick

everytime i eat fast food or go out and eat a few hours after i get super sick (diarrhea) tmi sorry.. but when i cook at home or eat at home i never have that problem. could it be that my baby doesnt like fast food and only home cooked meals .. that's how it seens which is fine since my boyfriend and i cook 6/7 days a week its just hard right now because we got hit by hurricane Irma and our fridge isn't working so we cant have anything cold in it so ive been picking up food untill it gets fixed