The man decides the gender, we already carry an X chromosome and if a males X chromosome meets our X then it is a girl..if their Y chromosome meets our X chromosome then it takes over and is a boy…
Don't worry, my bf was the SAME way, we have a 4 year old girl and he really wanted a boy this time but it grew on him a little later on…he was hoping at my last ultrasound which was on Tuesday that a penis would magically appear, well that didn't happen lol…it is definitely a little girl
he decides the gender! just tell him that.. that lil girl will have him wrapped around her little finger just you wait and see. everything will change once that baby is in his arms