You have a high chance of getting pregnant. I suggest that you take the emergency contraception. Plan B step can be found in pharmacy. When did you last have sex?
Yes, you can certainly get pregnant from that. You even have a chance of getting pregnant if he "cums" on your stomach and it drips down in that area and enters you somehow....sperm is very sneaky and are known for finding their way to an egg...that is if you had a useful egg at the time of the sex....eggs have a very short life spand....BUT....sperm can live in your for several days ...in the mucus of your vagina..
Not to mention that men produce pre-ejaculatory fluids.. He cant honestly prevent sperm from entering unless you use protection. He may still be releasing small amounts of semen even before he feels that he is going to ejaculate.