Yes you are at a healthy wieght and dont worry. I am the same, have lots of muscle, except i am overweight. which i need to work on. Who cares what others think or how others look like. Everyone is unique so ya dont need to worry bout a thing. =)
You can enter your weight/height here http://www.nhlbisupport.com/bmi/
you will see that you are totally normal! Don't compare yourself to others, everyone comes in different shapes/sizes, and you are beautiful just the way you are.
damn chick gain some weight im suprised that your not bolemic because thats an unhealthy weight