Food poisoning or food intolerance?

I've had either food poisoning twice already or I have developed a new food intolerance. I wouldn't be surprised as I've always been a bit sensitive to foods but this is crazy! My husband can eat the same exact thing and I will be throwing up (TMI) diarrhea for hours. Doctors not concerned unless it lasts more than 48 hrs which makes me feel better about it, but it's miserable! I went to work everyday with morning (all day) sickness, but I can't handle treating patients with vomiting AND diarrhea. Only one at a time please. 😕