Most girls only keep growing about 2 years after they hit puberty. However, some girls stop 4-6 years after the hit puberty. There is really no way to tell exactly when you will stop growing, unless maybe your doctor can predict it based on your medical/growth history. Everyone comes in different shapes and sizes, so if you are very short, or very tall, that doesn't make you "weird" or ugly. It just means that's how tall or short your body was made to be.
to find out your adult height there are height predictors that calculate your height based on your arm span measurement. Google arm span height predictor and you'll find lots of information.
Well if you wanna know how close you are to being done growing, you can get an xray of your hip. If you're down growing it'll be fully white, I believe.