yolk sac vs placenta

laurashaffner@gmail.com

Ok so when does the yolk sac stop feeding/nourishing the baby and when does the placenta fully form? I've read online the placenta forms b/t 10-12 weeks....I just had my u/s at 10 weeks and the yolk sac was still there but small - then I asked "is the placenta there? is it formed?" and the u/s tech said "no it's not formed yet....but it looks like it will be on the back side of the uterus b/c that is thickening". I just wanna make sure my baby has a placenta when the yolk sac dissapears! LOL

AppleRidge

12 weeks.  You heard exactly what I did at 9.5 weeks.  I was surprised to see the yolk sac still there, too.

sevenonesix

BBHME:

12 weeks.  You heard exactly what I did at 9.5 weeks.  I was surprised to see the yolk sac still there, too.

this. my 9 week u/s showed the same thing. 12 weeks the yolk sac was gone and the placenta was functioning perfectly  

vflipo

At my first NT scan at 12 weeks it was still there. The next week, it was gone.