Gestational Diabetes?

I know no one on here is a doctor, but I need some advice. I am 17 weeks and lately I have been fainting a lot. I also have been shaking. Even after eating / drinking juice I still am faint.

Can you share your experiences with gestational diabetes / the symptoms you had?

I am a FTM, and I have a doctor appointment Monday where I will consult my doctor. I am just curious.