When can I tell if I am having a boy or girl? At your second scan, the sonographer may be able to see if your baby is a boy or a girl. Tell them if you would like to know - and tell them too if you don’t want to find out until the birth. The point of the scan is to check the health and growth of your baby and some hospitals may have a policy of not looking at gender. And your baby might be lying in a position that doesn’t let the sonographer see the gender.