It could very well be the types of food your eating or a bacteria build up in the bowls that's causing the sweating and nausea or bowl blockage try changing what you eat and eat at normal times if the issue persists I would gonthe the doctor I had the same issue I changed what i was eating and my it helped alottt
It sounds like you have a food allergy that you are not addressing. Perhaps you are gluten intolerant. I would cut out all gluten containing foods for two weeks and see how you feel. Many people suffer symptoms like you and end up feeling so much better once they cut out gluten
It sure sounds like you have food allergies or sensitivities. You could also b be intolerant to Gluten or could have Candida (a yeast infection in your gut. I suggest taking a good, high potency probiotic, cut out foods such as wheat and yeast products and sugars, do this for about two weeks, if you feel better then you will have found the culprit, if not, I certainly would see your doctor and ask for some food allergy tests.