Can you get pregnant this way?

Can you get pregnant if you and a guy are having sex and he doesn't cum at all?? We were going at it for awhile and he takes forever to cum and i was tired so we stopped.. My period is 2 weeks late. I havent been stressing... So is it possible? I know there is pre cum (not sure if he even did that) but i always thought that happens right before their about to? Like i said he didnt get off at all... oh and no condom was used.