anxiety attack

i guess i have a little issue (that many, many people have) of holding in my emotions. starting last thursday evening, things stopping going my way. in fact they went quite the opposite way. it started with something as silly as a party, but the backstory to it all made for some very upsetting results then i missed classes the next day thanks to being extremely sick and tired from not sleeping. i proceeded to start the next week with the first guy i've like in a long ass time (two years..) ending our little "thing" that was going on. it hurt like  hell but i didn't want to talk about it to my friends in fear of breaking down. then wednesday i was waiting for results on a casting call, which they presented over two full days. those two days were spent anxiously awaiting my picture to be put up.. but no, i didn't get it. it was rough, i haven't wanted something so bad in a long long time. but again, i just held my head high and pretended i was alright. on thursday i started getting dizzy and shaky, but i had been sick, so i blew it off as that. i went to a party, was rudely insulted in front of a group of people by a boy with an ego way to big for his mediocre looks and then i wandered off into the land of intoxication. stayed up till 5 am doing home work and then woke up 3 hours later for school. friday was stressful, with a final and then getting ready for formal, which i was attending without the date i was hoping for (the before mentioned boy). i was dizzy and shaky and trying to have fun and holding in my extreme disappointment. no less than 15 friends stayed over that night and i only grabbed another 5 hours of sleep before being woken up to drinking. the day started strong and ended a few hours later with random people in my apartment and fights between roommates. after everyone and thing was sorted out, i was not only dizzy to a ridiculous amount, i was beyond upset, angry, tired and completely done with everything going on around me. i went to bed at 12 wondering if i was seriously ill. 14 hours of sleep later i physically felt much better, less shaky and dizzy. but i'm still very upset and i just don't know what to do about it. i just can't seem to let myself relax enough to talk about it or just cry or scream or hit something. i'm going crazy! i just can't release it and i feel it building inside me again. i'm waiting for someone to help me, but i won't let anyone near me. i am to embarrassed to admit how much i liked this guy or how much the casting call meant to me to any of my friends, yet i can't even break down when i'm alone, because i feel so stupid. it's all just too much for me and i'm going to break.