 [ Symptoms ] how early can you tell gender  using a 3d ultrasound how early can you tell the gender of your baby can you tell at 6 weeks along [ Disease ] as a mother of 4 with my 5th on the way please know that you have to be patient typical ob is will order an ultrasound at about 15 20 weeks truly other than a heart beat and some newly formed limbs an ultrasound at 6 weeks does not give you to much info other than if the baby is developing normally and accurately determining a due date