Fox it is better to drink something (even if it is not water) rather than drinking nothing for fear of the sugar content, if you're concerned about sugar, drink squash or watered down juice over Juice on its own or reduce the amount of sugar taken in tea and coffee but the the end of the day better to drink something rather than nothing at all.
Pram Your centre of gravity is changing due to the baby adding weight to your body, so your arches may be hurting as a result of this. Get thy self to a boots and buy some arch supports (an insert which sits in the bottom of your shoe), try to wear shoes that tie up (the kind that make you look like a granny or trainers!) rather than loose ones (the kind you'd never see a granny in, pumps and ugg boots spring to mind).
Starting to feel like some old sage, I have suffered from so many problems over the years, its so been there, done that, got the t-shirt!! Ha ha! I'm afraid that my advice can never measure up to Lumpy's Nan's book though!!!
F&T