A very small chance, yes. If his penis had precum on it, you might have some sperm inside of you. I wouldn't worry though unless you miss a period.

well im usually due any time in the next two weeks from yesterday. it happened sunday morning.

Well, I wouldn't expect you to become pregnant from this, but it's not impossible. I would try not to worry unless you miss your next period.

In the meantime, keep in mind that pregnancy is always a risk when you have sexual encounters. Don't allow a penis near your vagina unless it has a condom on it. Not only will this help protect you from pregnancy, but it will also help protect against std's. But also remember that condoms are not 100% reliable even with perfect use. You might want to consider getting on birth control if you're interested in having sex. Combining birth control (such as the pill and condoms) will make your chances of getting pregnant almost nonexistant.

Good luck, hon.