Dry mouth?

Amanda
I am 8 weeks 3 days today, and have been experiencing a lot of dry mouth in the last few weeks. I'm not sure if it's normal or not. I've been trying to get as much fluids in as I can, but the nausea has been making it difficult. 
Has anyone else experienced dry mouth/throatsnd thirst in early pregnancy? I've had it in the morning more than anything. I'm scared its gestational diabetes, but I'm not sure how common that is.