30w3d us gave bpd 74mm, hc 289mm, ac 272mm, fl 57.5mm efw 1647g. normal at this gestation? hc & ac measur almost a week ahead. dates wrong? problem?

Normal: It's completely normal to have some disparity in the growth measurements, almost no pregnancy has 'perfect' accordance with the measurements. At your gestation, measurements would have to be more than 2 weeks disparity in order to be concerned, 1 week is definitely within standard deviation of error of the technology of the ultrasound, even. No worries!