Answer ( 1 )

  1. Thanks for writing to us at Medimetry. LMP is more accurate if you are very sure of it.LMP is not reliable when-periods are irregular, or patients who conceived in lactation period when there is no Menses.so rely on LMP if you are sure of it.You can calculate expected date by first urine pregnancy test or by first ultrasound. Sometimes baby"s growth is not up to mark then USG will show smaller gestation age.I think your problem is solved now.Write me again if you have confusion.