I recently did my Doppler and growth scan at 29th week .my doctor took two readings both the times AFI came different. My 28th week Doppler and growth scan had AFI 18.1 Though all sdp are less than 8. First AFI reading showed 21 and second showed 23 . She has written polyhydromnios. M very worried. I had each two anomaly scans one at 19 and another at 23 except mcdk unilateral kidney everything else was always normal. What should be my next step?