Normal Reaction?

I had my glucose test on Thursday. I wasn't allowed to eat before, strictly water only because I needed a full bladder for the ultrasound and empty stomach for glucose test. I had 5 mins to drink it, and not long after I started to feel hot and nauseous. (Which has been my normal reaction to sugar in my pregnancy). It went away as I sat there, but during my ultrasound I felt even more nauseous and had to sit up because I thought I was going to throw up and was light headed . She gave me a wash cloth and I felt better and got through the ultrasound, my blood draw, & the appointment. I think it was laying on my back that was making me feel bad and I already had like 30 something ounces of water in my stomach, but I won't hear my results until tomorrow, hopefully. Praying I passed! Has anyone else felt sick or bad after eating something too sugar or contains too much sugar? I asked my doctor about it in the beginning and he said sometimes that happens and it could be my bodies way of saying it's not good for me or baby 💁🏾 Still nervous.