I can’t take it anymore!

Hello, I’m here just to tell you about how bad I feel, I think I’m bullied but I’m not sure if it’s really this, I’m from Ukraine and going to simple public school (lyceum), I’m 13 and going to 8 grade, I’m very shy kid and have only one friend at school, and here two girls who trying to make me angry and make fun of this, they even making fun from my ignoring them, it’s making me feel angry and sad, it’s started at 7 grade one of this girl left school but situation still bad, i don’t think that i can tell about that to school principal because i think they will make fun of me more, but when I’m telling about that to my mom she telling me tell about it to school principal by myself, and i just feel helpless in this situation, i already even started thinking about self h#rm and only what stops me it’s my fear of pain but any day I can overcome this fear and do it, it’s really scares me but I feeling too bad to worry about it, I know it’s won’t help but I can’t do anything else maybe it’s will make my mom notice that I can’t deal with it by myself…on this it’s all