Under your pubic hair is called the mons pubis. When you're pregnant, you can't even see this tiny mound of flesh. In fact most moms only notice if they have been shaved for a c-section. Though stretch marks can stretch from the pregnant abdomen all the way to and through the pubic hair. It is also possible to have them start here and move to the inner thigh. Needless to say, these are easy to cover up!
Ina May's Guide to Childbirth. Gaskin, IM. Bantam; 1 edition.