Thanks for the reassurance. Things that I breezed through the first and second times seem to be causing lots of anxiety this time! Although I didn't have this problem in either previous pregnancy. I will know more today when I get the results of the initial glucose test and hopefully after the scan on wednesday 5th Jan may have a bit more reassurance. Thanks again.
Gestational diabetes is a common cause of polyhydramnios but not the only cause. It can also occur for no reason, And if not severe, can also resolve on its own. Don't fret. I had SEVERE polyhydramnios with my first, without indication of diabetes and she was PERFECT!!! If diabetes is your cause, it is an adjustment but perfectly manageable.