Apologize for "trying to have sex"?

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So I was at a party about 5 days ago, and I met this girl who I instantly got connected to. She is 21 and I'm 18, (it's weird, huh?). We made out and so on, and after a while I was trying to go all the way with her, but she seemed kind of hesitant, she didn't really seem like she wanted to do it even though she took off her clothes. I asked her if she was a virgin and she said no, even though I'm almost sure that she is. She then told me she didn't feel like it, but still wanted to be with during the night. I was drunk and a bit stupid, I told her to go because I was feeling sick, and I think that made her sad.

The day after, I wrote to her on Facebook and said that I was sorry and stupid for trying to make her do things she didn't want to. I am just wondering if it's weird if I say I'm sorry, like… do I have any reason to feel bad or what? My friends think I'm a fag for doing so, but they're dumb so it doesn't matter.
She still hasn't answered me on Facebook, maybe she thinks I'm weird :O