Pregnant or not?? ideas.?

Sooo. I had sex but it was for a brief moment no more than a few minutes and yes I'm aware of the pull out method being ineffective but afterwards it took a long time for him to finish the only thing I'm worried about is the fact it was supposedly during ovation period (so says my period tracker) so I know for a fact he didn't finish but is there a factor of pre-*** or was it too soon even for that if he wasn't anywhere near finishing so I'm worried but what are the chances