Swollen tingly fingers?

Ashley

I've noticed for the past week or so, whenever I wake up in the middle of the night to use the bathroom, one or both of my hands are swelled up. My fingers are puffy/hard and tingly when I try to move them. It goes away after a few minutes. Then I go back to sleep and wake up with it again. I'm 35 weeks pregnant, and drinking as much water as I can. Anyone experience this?