What do you think I should do about this girl, I'm scared to go to school?

Back last June this girl in my year kicked the head of me about 8 times because one of her mates mad up a rumor that I called her a *** when I didn’t as I hardly knew the girl, and up until December people still wrote about it on facebook and made me the centre of their so called fun. I found out about all this and went to my year head/dean in school who is so nice he helps me through everything. He sorted it for me and even got the stuff deleted which was great. the week i came back to school i was less paranoid that a fight was going to break out again because i had gotten no dirty looks from her or her mates like i did get in the past and then last wednesday this boy who bullies me non stop and is good mates with this girl was walking with her in the corridor and as soon as he seen me and my mates coming he pushed her straight into me as if he was looking another fight to occur, i went to my year head about this incident also (there was a lot of other things going on that week too) and he dealt with it, but these people are the type that don’t give a sit about their education and want suspended. The next day they were both out at college for hairdressing and cooking, so i was ok, the next day i wasn’t out in the yard at lunch as I was speaking to my year head again about another incident with a boy in my class, and when i was outside my maths class waiting on someone corridors empty her and her mate walked passed and gave me the dirtiest look out as if it was planned now I am terrified of school tomorrow what do I do? I don’t want another fight to break out but I’m scared it will, I really want to inform my year head but i’m afraid of being a burden, should I tell my form teacher? i just don’t want to annoy my teachers over this.