Originally Posted by
atomic sagebrush
Nub shots do not work at 11w4 d. Boys and girls are IDENTICAL at that gestation and your OB was wrong to guess because she should know better. I guess she was just humoring you by making a guess??
THe Y chromosome does not start producing testosterone until about the 10th week and only at that point do the male genitals even begin to form. This process takes about 3 weeks to become obvious on an ultrasound and in the 11th week all babies look like girls. This is a fact that will be corroborated by any ultrasound tech.
Symptoms do not predict gender for the same reason. In early pregnancy the Y chromosome is dormant and not even doing anything (no testosterone is being made) and thus your symptoms have nothing to do with your baby's gender.
If the Chinese calendar worked, there would not be orphanages full of unwanted baby girls.
My DS2 and DD were very similar pregnancies. My other three DS were all very different from each other and the other two. So at least for me, the only two similar pregnancies were different genders.