No, you need to get a lawyer. This sounds like the same scenario as the "sexual harassment" accusations that got many young men expelled during the last decade (search examples and you'll understand). I would delete your account and deny everything. Do not speak with anyone until you have spoken with your lawyer. Do not speak with anyone without your lawyer present. Finally, I would consider transferring schools (not even kidding, people talk shit at universities & professors will find reasons to fail you). I wish you the best, I'm sorry this happened to you.