I am feeling mentally week... How to solve this problem?

I am 13 and i look very big then my age , last year i changed my school and every things became very worse the others children started teasing me and i only attended my final exams i have lost all my self confidence and i am feeling very lost, this year also i have to study in that school only as that's the best school where i leave, my parents r also not understanding my situation that how bad u feel when some one calls u monster,, i know that every body would say that i should focus on my studies and should not think about all this rubbish stuff but really it matters lot to we teenager.... please give practical and helpful answers.


first of all u shud b confident of wot u r ...cmon everybdy dsnt luks good ...n if students r teasng u dnt pay attentn to it or respond fr few days ...if u r gud at smetng bring out tat activity ..ur talent ..once ur talent is recgnised ppl will start havng respect fr u ...bt dnt get arrogant ..keep smiling ..behave nrmaly ...u ll get few closer frenz n few will b jealous of u ...bt once u set urself as smetng wid ur talent nobdy is evn tchng u ...n if smeone terrifies u mre cmplain to d teachr ..datz wot schools r made fr ...still if smeone trbles u ..reply bak strng wid politeness ..no harsh wrds n frgve him ....start helpng ppl slowly n students will like u ..everyonez human dnt wrry ..n once u r happy ua studies will awsm too