Should I go to Prom or stay home this weekend?

I'm a senior at my high school, and our prom is this weekend and idk if i should go to prom, i dont really like dressing up but all my friends say i sud it alone cost 24 dollors for a single ticket?? and plus theres going to be after partys should i go?? I'm feeling like i do wana go.... but then i dont... the reason why is because when i dress up i feel uncomfotable.. and dont feel myself... what do you think?? i should do??