Reality finally sets in...

So I had a friend lets call her yellow, we talked a lot and during school she started asking me to do her work and help her or do the work and let her copy and I did I did everything, I was basically the reason she was passing English and chemistry. But some point I got the gut feeling she was only keeping me as a friend because she didn't want to do her work and she knew I would have mine done and only keep me around to do her work or do things for her. Last we spoke was may 27th and that day she snapped at me bc her boyfriend being a dramatic person he is randomly left and she was worried I asked her if she knew where he would go she snapped st me to let it go, not even a min later the guy in our group asks the same questions as me and she's nice to him. Like. What the fuck. None I mean fucking NONE OF MY FRIENDS have even messaged me! So kinda makes me feel worthless and not worth anyones time so I stopped checking my phone and I stopped being on it 24/7 bc I have no reason to be on it. And when I did her work I was also doing mine, I was doing three people worth of work and I missed some sleep and meals doing it. I'm always smiling for people so it never really showed how much it affected me. The first time I cried at school was during a few weeks of it left and that's bc a toxic ex of mine was dating my best friend and I went to talk to him and she came at me so I pushed her off of me and I'm in this meeting room fucking panicking not able to breath bc I'm scared. So.