After glucose test

I know this has been talked about before, but I can't find the posts! I just did my 1 hour glucose test and I feel AWFUL. Dizzy, weak, (TMI) diarrhea, stomach cramping. Is this normal? Did anyone feel this way and still pass? I was a little dizzy at my OB's office and when I told them that they seemed surprised and now that I feel even worse it's making me kinda nervous. Thanks, ladies!