My ob tried to check as early as 14 weeks so you never know :) I paid to find out at 15 weeks and they were right lol

My doctor only tells around 20-23 weeks

most OBs wait until around 18-20 weeks

I am getting mine the 16th and i will be 18 weeks.

sometimes they will tell you but they like to wait until your further. i got mine done around 13 weeks but i paid for it.