I hope the 17 different bodies thing is a lie, because damn you would be a straight up whore. And you're only 18! If you were my son, I'd be so disappointed.
Stop being so obsessed with sex. It devalues the whole experience and it devalues you as a person. Your whole worth doesn't revolve around it. Instead of quantity, go for quality. Try to search a significant other that you see yourself building a future with. Being intimate with your partner is much more rewarding (and a lot safer, less risks of diseases).
It's great that you have improved on your looks! You weren't ugly before, you were just an awkward teenager like most people. Don't define your worth on the amount of sex you can get. It just screams immature idiot who can't think for himself.
You should focus on your future: studying, working, networking, hobbies, carreer building, making lifelong friends and finding your significant other.