Growth scan today borderline high fluid.

Had a few apps today a growth scan which showed my boy is measuring perfectly on 50th centile, I had a glucose test and I am now awaiting my results and I seen my consultant. My consultant has said I am border line Polyhydramnios which is too much amniotic fluid. Normal afi is 8-24cm and mine is bang on 24cm. She said it's ok but need to be rescanned in two weeks to recheck levels. I have googled Polyhydramnios (stupid mistake) and I am now freaking out about complications and reasons for high fluid. Anyone else got high fluid or had in previous pregnancies? Thanks x