With GD vs Without GD

Guys i just started my 3hr test and im about 20 mins in, after drinking the glucose. I feel completely ill. I feel like im about to have diarrhea, throw up, and pass out. My stomach is cramping pretty badly.

I just want to know if everyone is effected this way? Is it just me? Ppl with GD did you feel sick after drinking it vs ppl without GD?