Feeling frustrated with drs

I am really annoyed with the OB clinic I am getting my care from. It feels like every time I have a complaint they blame it on not enough water intake. I told her I was drinking 60 oz and she laughed and told me that was definitely not enough and that I should be drinking a gallon of water per day. That my chest discomfort is just from not enough water intake. Anyone else’s drs recommending them to drink 128 oz? That seems like an insane amount to me and with 60 oz being hard there’s no way I can do that. I’m only 144 lbs and I’m 34 weeks pregnant. Drinking all that would literally put me in the toilet all day long. I can’t even switch clinics or drs because I’m too far along 😒