Can you tell the sex of a baby at 4 months?

if you need salty stuff : BOY

if you're craving for dessert and sugary stuff : girl

if your hair is quite dry : girl

At three weeks, many women don't know they are pregnant, although the sex of the child is already determined - the developing embryo does not have visible sex organs - so using signs is quite fun to play with, it is not a guarantee of anything.