My waist circumference is huge, is this normal?

I gained weight recently and now I just measured my waist. It is 128 cm (50.8 inches) and it doesn't sound normal!! How is it possible that its so big? I know girls should have at least under 80 cm to be healthy :( What can I do? I'm not that fat otherwise.
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My BMI is 28 so I am overweight. I meant my belly seems to be abnormal comparing to my size and overweight overall... I look like I'm late pregnant.:(
My waist circumference is huge, is this normal?
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