Is she potty training herself?

I am so excited.. my daughter just went pee pee in her potty... WOOOHOOOO! She asked to go sit on it .. I Put her on there and then turned out of the room for a split second. I came back and and she kept pointing to the potty saying "Mess".... she pee-pee'd. !!!! YIPPPEEEE... Is potty training going to be early?