As the others said, the timing is wrong and he had a condom on, so you probably dodged the bullet this time.
no , you can not be pregnant, it is very very very unlikely, if you are still having anxiety, go to a drugstore and buy the plan B pill, you have 48 hours to take it after the incident, but i dont think you need it, best wishes..
don't worry about it - relax :-) if he had a condom, it's very unlikely!