I never get heartburn, but the past 3 days my chest has been on fire. It started after pizza on Saturday night. Sunday I did have more tomato sauce with pasta. I guess it could be the sauce, but I've been eating it all my life and it's never bothered me. Today it was after eating a veggie wrap - mushrooms, spinach, bell peppers, zucchini on a whole wheat wrap. I know tomatoes and pepers can be acidic but would an irritation happen overnight like that? I'm 31 and never had problems with such foods before.