This is a link to a website that shows different links to other sites about bullying and how to handle it -
link However if your friends are starting to bully you too, just to be 'in the crowd' then they are not true friends and you are better off without them.
I can't say whether you're ugly or not as i don't know what you look like, and sure you may not be the prettiest one in the school, but i'm certain there is one aspect of you that is gorgeous. Have you ever thought that these people are bullying you because they're jealous?
You have something they don't and they want it, and to show that they are hounding you to put you down so low you can't even accept yourself. Don't let them.
My conselhos is that you tell your parents, sit them down and explain that because of all the bullying and their 'it'll get better attitude' you feel as though they don't care, that they have no time to help. If bullying doesn't get nipped in the bud once it starts then it can go on for years and years. And it can also lead to death. A dear friend of mine was bullied all the way through school, and on the last ano he'd had enough and drowned himself. Because of that i've always felt the bullies had won. If you start harming yourself, you're showing these bullies that what they are doing to you is working. Try to ignore them as much as you can as they'll get bored and stop once they know their words aren't taking effect. Go talk to your teachers, write letters to the board, ask the headmistress/master to do something. They have an obligation to stop this, i'm sure the school has a no bullying policy, so get them to use it and enforce it.
Hope everything gets sorted for you soon, and you need anyone to talk to i'm only a message away.