Why am I always feeling so FAT!! I'm short...??

I'm 5'1 90 lbs, I run 1-3 miles 5 times a week, i do pushups, chinups, and crunches galore! I eat healthy, but I am always feeling FAT! I can't help it, when i look in the mirror all i see is a fatty! and yes i may be a size 1, but im thinking its only bec im short. Am i fat, or am i being paranoid? oh ya and im 25 yrs old.