I just scheduled my 20 week ultrasound and they told me I need to drink 32 oz of water within a 1/2 hr an hour before the scan. I don’t think I could do that with a normal bladder, especially not now with a baby laying on it. What were your instructions? I feel like I should drink as much as I can and hope for the best, but 32 oz is not happening. Don’t get me wrong I drink a ton of water through the day but that much in a short time, I will probably explode.