Dying of thirst??

Elizabeth • Due 7/22/16
I'm 35 w 4 d and literally chugging water like a wild woman. I drank 3 full bottles just throughout the night last night when I got up to pee a few times, which just made me have to pee more but I just feel so thirsty. Heartburn has been bad and im thinking maybe it has to do with that? Sometimes water helps. Anyone else super thirsty during these last few weeks?