how do you get over the idea of people staring at you and you feeling uncomfortable wehn you are out and people see you with your missing part of your leg?

i went out this morning with my friend we had breakfast and then went to wal*mart and i felt like everyone was staring at me and i insisted on walking the whole way around wal*mart with my freind which created a challenge i'm not used to walking that much in one day on my crutches i was am awful sore by the time i got home. next time i might just take my friends advice and get one of those electronic shoping carts.  i heard a young child say to his mom mommy she don't have a leg    his mother said to him its ok she don't need both she's got those sticks to help her walk.  and the cashier looked at me like i was a freak and she didn't seem to happy that i had chosen her aile to check out in.  i feel like i make her uncomfortable to check me out becasue of my amputation. well i'll go for now.