When did you start to show? (Second or later)

Kristi • I'm a stay at home mom to a little boy who's 2 years old. I'm currently pregnant with my second who is due 10/17/16.
I'm 5 w with my second pregnancy. I've heard that you can show earlier and more in later pregnancies because he uterus has already stretched. Is this true? When did you begin to show? With my first I was really small most of the pregnancy until about the 7th month.