I keep experiencing, occasionally, cold sweats,, nausea, extreme shaking, and what seems to be hot flashes at the same time. I have had a gastric sleeve 3-4 years ago. Assuming it is hypoglycemia, and I eat protein and carbs and after a half hour it goes away. I just had an episode and am still shaking. It s been over an hour. I had an A1c done a month or two ago and it was normal. As well as my BG.