I had my 38+ weeks Ultrasound and was told that their is nearly no amniotic fluid left. Althogh I could still fell the baby movement well and stronger at times.

I just want to know if dehydration has immediate effect on amniotic fluid.

As I did 1.5 hours of yoga in morning with only 750 ml of water finished and went walking to the scan center sweating where i sat for another 1 hour feeling very thirsty but nothing to drink.

Could this affect ultrasound reports?

Any gynac here for inputs?