I really don't want to go to senior prom....will i regret it??? help :(?

If you think there's even a chance you'll regret it, then go. Just don't spend a ton on your dress or any other party prep, don't go with anyone just for the sake of avoiding going alone (because there's nothing wrong with finding people to hang out with once you're there), and be prepared to bail if you're not having a good time. See if you can talk your parents into loosening up on the after party if you agree to certain terms, though. (You're presumably going to be in college next year, so they've got to let you start exercising your independence and ability to make good decisions for yourself sooner rather than later.)