worrying about the future and school

i have two major reasons i am sad all of the time and i cant control one of them . every since i turned 17 in july my nerves have been messed up having panic attacks in school or at work worrying about my 18th birthday. seeing time go by and days running out before i turn 18 makes me worry. i dont want to turn 18 i dont want none of that. i just want to end my life before i even get to my 18th because thats the only way i feel is best. the second thing is this school year sucks i feel ugly, have no friends etc. sunday nights i have high anxiety and sadness. it’s hard for me to go and i just wanna do online school for the rest of my junior year. i feel ugly nobody compliments me or tries to be my friend or date me. i stay up late at night because it’s just hard to fall asleep when i know school is the next day and what i go through. i already told my mom that i am nervous about turning 18 but not about the school stuff. i just feel like time is running out and im gonna die soon.