So we are thinking we conceived in March so he looked up the birth chart thing and showed most common is a boy at the age of 20. I'm sure most of you are older than me but has anyone heard this. Do you think it's true? And did you have a girl instead or boy and it picked the opposite gender? I really only want one boy. We have a blood disorder and the men all have it in my family. Does that make me wrong not wanting more than one boy?