I feel like I'm being bullied/excluded.. what should I do ?

You should know that your not alone and that lots of people are bullied. First of all these girls are obviously people you shouldn't want to be friends with so be glad that your not friends anymore because there showing there true colors and they suck. Know that you are a great person and try and make some friends in another class your inor an after school activity. these girls aren't the only girls your ever going to meet, there are other people out there. people that would treat you right and be a great friend. transferring schools isn't the best idea only because in life you need to learn to stick out your problems and not avoid things. leaving isn't going to help because another day there will be another uncomfortable situation for you, one that you won't be able to Escape. So keep your head up high and stay positive and know that your perfect just the way you are :)