You do not get pregnant just from kissing or just from someone being on top of you fully clothed with no penetration.
"Sperm can't swim through clothes."
http://www.coolnurse.com/sex_faqs5.htmMost pregnancies are due to a p***s being inside a v****a. As Nikolita said, however, it is actually possible, although not nearly as likely, to get pregnant other ways. One way is semen on the hands (he has an orgasm, one of you gets semen on your hands, then touches your v****a). The other is if he has an orgasm outside of your v****a, but very close it to (maybe the top of your thigh) with nothing in between the two of you, such as clothing, a condom, etc. Your situation did not sound like either of those cases or anything similar to them.
"Q. He "came" outside my v****a, could I be pregnant?
A. It's not very likely. If the sperm was deposited very close to the opening of the v****a, there is a small chance they could make it inside the v****a, but not very likely. They still have to swim a long way from there. If the sperm wasn't close to the v****a (like on your thigh or leg) than the answer is probably not."
http://www.coolnurse.com/sex_faqs5.htmKeep track of your period and look through the site I posted as well as other sites you can find posted around the guild. Talk to a doctor if you think you might be having sex soon to see what kind of birth control might be right for you. Make sure the doctor explains the birth control to you. Read the package and directions if you decide to use condoms.