3 hour glucose test

I’m an hour and a half into my 3 hour glucose test and I’ve never been more miserable in my life. The drink they gave me was of course fruit punch, and fruit punch of any kind always makes me nauseous. I’ve almost passed out twice and almost thrown up at least 3 times. Sitting up makes me feel dizzy and lightheaded and laying down makes me burp up vomit. They won’t give me anything to drink and I’m desperate not to have to do this again. Ugh please give me strength to get through this 😭