Daily Water/Fluid Intake

I feel like I have been drinking a lot more lately since I know that I need to be staying hydrated during pregnancy. Especially since I have started having some Braxton Hicks contractions and it is always at least 95 degrees where I live. I feel like I am struggling to barely drink the 64 oz or 8 glasses of liquids a day that I need, and my doctor today said that I need to aim for 80 oz a day.

I feel like it makes sense; it seems like I'm drinking all day long but not really peeing that much back out...does anybody else feel like they are struggling to get enough fluids in a day?