Throat feels dry and...powdery?

My throats has been feeling really dry and I try to drink lots of water but it still feels dry! But it's not the kind of dry throat that is scratchy and painful, more like it's just dry and... Im not sure how to describe it. I think if I had to, I would say it felt... Powdery? Like there's really dry powder in the back of my throat that just absorbs all moisture. How do I get rid of it? I haven't been able to sleep yet because it was bothering all night :(