I don't drink much water mostly because I'm never thirsty for anything but I'm always hungry. I've been scared I may have low fluid because of this. My baby moves on a daily basis and if I worry I just press around my tummy til she kicks. I often notice hiccups
If something is wrong, you would feel worse because you didn't get checked out. I doubt there is problems with blood circulation, but talk to your doctor about your concerns. That's what they're there for. Even if you're not thirsty, you need to drink a decent amount of water. They will be able to check your fluid levels on an ultrasound if they choose to do so.