It could just be you getting nervous! Calm down ok no need to upset your self. Get a test. K =]

My question would be, why aren't you using some kind of birth control? Unprotected sex can be very dangerous and risky - not just in relation to pregnancy, but also diseases you can carry with you painfully for the rest of your life.

You don't know if he came in you? Take control of your sexuality. Go to the doctor, family planning clinic and get tested for sexually transmitted infections and invest in some condoms. No glove = no love!