I know I'm not alone, but seriously?!?

So, I had a REALLY BAD day yesterday... I don't know why really. I just am so stressed over my AP classes that I'm kinda just shutting down. My body is on strike again. It's sending shooting pains through my arms (like fingertips up into the base of my neck) and also in my leg. Caffeine makes my head feel fuzzy and funny, and not in a good way. I had some for the first time yesterday, and it totally overpowered the Ibuprofen I'd taken earlier that day. But Dr. Pepper tastes pretty good... I talked to my cousin for awhile after that (maybe that's why I was in a bad mood not the caffeine...Not that my cousin makes me grumpy, but he made me talk about things that make me grumpy because he didn't know about any of it.) And then I went home...an hour late...my mom was so mad! I had been helping someone with chemistry which is why we had stayed, and then while I was talking to my cousin, she had been finishing her homework. My mom yelled at me when I got home. and I went into my room and cried, then I went downstairs to get more Ibuprofen, and my older sister (who normally is the one who comforts me) told me that my younger brother (who had had to wait at the school while I was busy) had told her that she was suppose to ignore me, and then she did just that. I was crying again before I turned around, but she kept ignoring me. I cried for several minutes before I calmed myself down enough to start on my AP History homework. I finished all of my homework before I had mutual, and I didn't want to go. I really think that life is just having issues. I'm sitting by some of my friends I've known since 8th grade, and they haven't noticed that I'm crying, they're to busy. GRRRRRRRRR sometimes I hate myself. I hate being jealous, I hate being small, I hate my nose, I hate how I never reach my potential, I hate that I know everyone, but almost no one knows me. I'm done writing for awhile because it makes me too upset.