Last night I got up to go to the bathroom, and when I stood up, I became very dizzy, was very nauseated, and broke out into a complete body sweat. This last for approximately 15 minutes, and then the symptoms slowly went away. I thought I had to vomit, but when I intentionally tried to vomit, nothing happened. I have type 2 diabetes and currently take Janumet twice a day. Could this have been low blood sugar, or high blood sugar?