Breast feeding in public. What about the Creeps?

Catherine • Pharmacy Student, Army Wife, Proud Mommy
So I'm a first time mommy and I'm breast feeding, today I was out with my Husband and daughter for her check-up and i was breastfeeding my daughter when I asked my husband to go get the car since it was hot and we park kind of far. Anyway, I am slightly covered I only had the half her face and just the sign portion of my breast showing. This man walks up to me while I'm feeding her and just looks at me while I'm feeding he asks me how old she is I told him 4 days old he than asked "she like the breast?" I automatically got uncomfortable and asked him to please get away from me. He walked away but sat far and close enough to still stare at me while I was feeding my daughter. 
How do you ladies handle the stares when your breast feed cover and uncovered?