Help....my friends keep excluding me-sorry it's so long!?

at school, there was a square of best friends, me, R, I and A(not giving their full names).We all used to be sooooo close and were always inviting eachother round. At this point A and I started to move away and be best mates with eachother Then, E came into our school and is quite mean to every1 and especially me, although they let her into what was a pentagon then because she's quite popular with boys. Then there was the school play. I didnt get a speaking part, and every one of my friends did(typical, my life always sucks) So then, C came and pushed me out of my place in the pentagon, after being realy close with A. So, I dont like just standing around at break tagging along all the time, so I play football with the boys, who luckily, like me, and now, I've been named 'best girl footballer in the year' by them. And now they exclude me even more. E, R and me all played tag rugby since the start of it, and then I decided 2 come and play a couple of yrs later, and now, she's vice captaain, and R is captain. Now, they get to decide who's in the team.(btw, I is rly evil towards me) So, before, D(me) was in the team all the time, but now I has come along choosing the team, I'm not included. How unfair! What shall I do? PLEASE HELP ME! I get sooo upset.......