polyhydraminos

Dr. Farah
I m currently 28 weeks pregnant and the due date is Aug 2nd 
I was diagnosed of mild polyhydraminos 2 weeks back ie at 26 weeks bt at my 24th week scan I was having normal liquor. I m having a huge belly when compared to my gestational period. The AFI was 22. My last three months avg blood glucose level is normal bt when I did my gtt at 26 weeks I had high values. And now I m on diet control. And my endocrinologist is of the opinion that polyhydraminos is not because of my glucose values bcoz they wer apparently normal for the last 3 months. I had pcos nd nw also has hypothyroidism. Will I have to worry in the coming days?