21 week u/s....24 oz or 32 oz of fluid??

Im sorry to waste a post, but I figured Sundays are pretty slow here.  I have my 21 week u/s at 10am tomorrow and assumed I had to drink 32 oz of fluid but just checked my u/s paper and it said 12 week or more obstectrical 24 oz of fluid.  Under that it said Abdomen and pelvis 4-5 glasses of 8oz fluid which would be like 32-40 oz.  Im assuming its the first one right?  I dont want to over drink and my dr. is gone until May 1st.  Thanks for the help.

[ImmortalOne]

I was told that until 24 weeks, 24 oz an hour before the ultrasound was good.  I have to do it tomorrow myself for a follow up to my last anatomy ultrasound to see if the baby has caught up with her age.

[peekawho]

They just want you to have a full bladder, that's all.  

[nikkicole827]

Pretty sure mine says 32... I'd just make sure you have a full bladder!  Thursday I can't wait!