Please help me what do i do?

Okayy i no youu are all gonna judge me from this, but well i was going out with this guy who is 18, and i sent him pictuers youu no what pics i mean revlileing ones, but i mean he was my boyfriend, and he sent me pics plus nearlly girl has done it, anyway he left his laptop round his friends house, and they went lookin on his computer and found mine pics, and now in school im gettin loads of **** for it beeing called a c*** a slut a sket, and the girl tht is mainly doing it is shoutin it out and everything in front of everyone, and im scared she has the pics on her fone, and is gonna send them to everyone i really dont no what to do, plus the guy is 18 and well im underage so if it is heard by the wrong person then he could be in big trouble, and i really dont no what to do ,the 2 girls tht are basically teasin me the most about this i dont think have seen the pics, but they have been told about them by there best m8 who saw them on my ex's laptop plus 2 other people, i rung him up and was like tellin him all this and he was truely sorry, but what am i meant to do, i was sooo upset and dont think i can go in school if these girls are goin to be like this, people always say sticks and stones breask your bones but names can neva hurt youu, well youu no what thts not true they do hurt and they embarsse me please help me give me some reinsurance or somthing please . x