Ah, I'm sorry if I've offended you--that really wasn't my intention, since I thought you'd picked a random but low number.

I imagine you must still be growing, because in adults, there's this handy thing called a BMI calculator that measures height vs. weight as a reflection of health, and 5'5 against 93 pounds ends up with a very low score.
Here's a link to a website that explains it--it's aimed at weight loss, but nonetheless it's an interesting concept.