scan report of my wife at 31 wks and 5 days showed this results...she also has low PAPP-A...... BPD-76mm,HC-277mm,AC-250mm,FL-56mm.....cervix-3.6cms,internal os closed,everything else normal which includes doppler too....Kindly give your opinion and inference of this result...She gets squeezing type of pain at near umbilicus..Thank you