I had one done at 15 weeks and 5 days. Not a 3D one, just a regular ultrasound and they could tell the sex. I drank orange juice while in the waiting room and it made me baby move around so they could see what she was.
I Had One At 15 Weeks And 5 Days! I Ate Fruit Loops That Morning And He Was Bouncing Around Like Crazy They Say Any Sugar Makes Them Move For ultrasounds
Drink something really cold & eat sweets