Hi again,
I haven't heard about fluid increasing 1cm per week, just that it can go up and down. Mine was 25.6cm at 28 weeks, 27.8cm at 30 weeks, 26.5cm at 32 weeks then 30.8cm at 34 weeks! Another scan booked for 36 weeks, which is when I will be kept in unless baby has turned head down and fluid back within normal levels....
By the way, the big risk for me is the position of baby- if you have high fluid levels but baby is in a normal head-down position, the risk isn't anywhere near as high.
xx
I just dont remember exactly... But this is a link
https://answers.yahoo.com/question/index?qid=20110514061204AA6RXiN
I am panic coz we dont know the reason for extra water....no GD.... Repeated the test today too.. Will get results tomorrow....
I see that in your case it dint have a clear pattern....
Btw, i read many times about baby changing position after 35 weeks too... Wishing you and baby a safe time ahead.., thank u for being helpful...
I think the 1cm increase per week is to do with the size of your bump- have you been measured externally from pubic bone to top of uterus? This measurement in cm's is basically the same as how many weeks pregnant you are. I've not had it done because I'm always just being scanned, so I have no idea if my external bump measurement is equal to my weeks. I think probably not!! I think I would be measuring many weeks ahead.
With AFI, I think it should be pretty much the same through the 3rd tri, getting slightly less towards the end.
I have no explanation yet for my polyhydramnios either, but am hoping it's just one of those unexplained things. All tests appear to be clear, but we won't know for certain until baby is here and can be checked over.
It's very uncomfortable now with an AFI over 30 and a baby over 6lbs in weight!!!!