A child’s sex is determined by the father’s sperm at the time of conception. Sperm carry either an X or Y chromosome. If a Y-chromosome sperm fartilizes the egg, the baby will be a boy. If the sperm carries an X chromosome, the baby will be a girl.

Once your pregnancy is confirmed, you will want to know your baby’s likely date of birth. You can calculate an estimated date of delivery (EDD) by counting 40 weeks from the first day of your last period. But you should remember that since you don’t know the exact date of ovulation this EDD is approximate. […]