Is what they are doing to me classed as bullying?

[Lymara]

At school, I fell out with this big group of girls ages ago, we had a few arguments on things like facebook and twitter and in school but it has all ended now, from my end anyway. I have dropped it and tried to move on but they just won't, here are some of the things they do,
-A few months ago one of the girls walked past me and shoved me into the wall.
-In the P.E changing rooms when I was getting changed as a few of them walked past they gave me dirty looks and giggled to each other.
-Two of them walked past me and one of them said "Eugh it stinks over here!" the other one giggled and said their name and she replied and said "What? It does, it reeks!" they both giggled and walked away.
-When I am sat next to some of their friends in a seating plan, one girl (the one who said it smelt) mouths things to her friends and they both laugh, I also notice she stares at me whenever I walk near or am just sat down doing nothing.
- Whenever I am walking in front of them slowly they say things like "Ugh why won't she move out the way?" loudly to their friends.
- Whenever I shout to one of my friends or shout something loudly in a hyper moment they will shout "SHUT UP!" indirectly but I know it's to me.
-In P.E we had to line up and I walked behind my friend and I was about a meter away from some of them and one of them said "EW! I'm not going next to her!" and they all laughed.
-They have told so many people about how bitchy I am etc. and have got LOADS of people to dislike me.
-They all just give me dirty looks when ever they walk past or do ANYTHING and they shout "EW!" and jump away.
All of these things make me feel really upset, I haven't told anyone because I think it will make me look like a wimp or weak, but It makes me really upset, I find school so hard and I cry myself to sleep every night. My chest feels so tight, I can only ever get it off my mind when I am having fun with my friends but even when I am doing that they do something even if it is just look at me and I am in a bad mood for the rest of my day, I know if I tell anyone then I will still be looked as the bad one because I used to have arguments with them. I just want to be chill with them but I have tried to apologize before but it seems as though they prefer hating me.
I have asked my mum so many times if I can move schools but she comes up with so many reasons why not to.
Is what they are doing to me bullying?

[Bob]

This is bullying, for sure. I went through the exact same thing and it's not easy. Telling somebody will not make you look like a wimp or weak. Some people may just say 'Ignore it and it'll go away', but that doesn't work, at all. Tell somebody and get it sorted, because the longer you leave it, the harder it will press on you.