Its a girl???!!?? Or is it?

I am 19 weeks along now, and feeling great! I have had a number of check ups along the way due to a question about an antibody that I tested positive for. Yesterday was an in depth ultrasound to see if the baby is being negatively affected (or becoming anemic) becuase of antibody Anti S. If the baby were to become anemic, he/she may have to have a blood transfusion in utero. My check up yesterday in Des Moines indicated that so far there is nothing to be concerned about. Check back in four weeks. Additionally, I was hoping to find out if baby Rich is a girl or a boy! The sonographer said several times that she thought the baby is a girl, but in the end she said she wouldn't say for certain. That, the baby wouldn't uncross (HER??) legs during the whole 45 minutes! So I guess I will hope to find out more in four weeks!