not much chances but i fyour that worried then buy her a pregnacy test. Sperm can't survive ona dry surface for very long.
First of all, you shouldn't be engaging in sexual activity if you can't even spell pregnant or couch correctly. Secondly, there is hardly a chance that she is pregnant. Especially if she had clothes on. I'm not at all trying to be offensive, it's just that sexual activity is a big responsibility and babies can be the result of sex. That is a very real possibility. You have to be ready for and aware of the consequnces of sex. If you can't handle a child don't do it. End of story.
Not much chance that you could get her pregnant under those conditions. Before you have sex be sure to consider some form of birth control so you will not have worries.