Polyhydranimos?

Sam
Was diagnosed with mild polyhydranimos of unknown cause. My level was 25cm @ 32w and 26cm @ 33w. Anyone else diagnosed or been diagnosed with it in a previous pregnancy? Right now the doc isn't too concerned since "fetal abnormalities" have been ruled out. I don't have GD, but have a huge family history of it so have been watching my levels. So doc said either I may be beginning to develop GD and we will see a rise in levels soon or it's just because of an unknown cause. I had a textbook pregnancy with my daughter, but an awful delivery. This time it has been a very chaotic pregnancy compared to my daughter, so maybe God will give me a break and a peaceful delivery. :) So anyone else in the polyhydranimos camp?