I turned thriteen a while ago and everything was alright until I started realizing that most of the other girl in my class had not gone nearly as far into puberty as I had. I started my period at age 10 and started developing breats at 9, so I know i was an early start but still..
Hi Zen,
There is no "supposed to be" at any age. We all develop differently and at different rates/times.
Nothing is wrong. You are just further developed than the other girls.
Hope it helps.