Do you think i could be pregnant from the pullout method 3 days before ovulation?

Yes it's possible: Pulling out is one of the least effective means of birth control.

That is possible: Use a reliable method of birth control if you are not ready for pregnancy.

Unprotected Sex: Any time you have unprotected sex you are at risk ffor pregnancy. If you have missed a period get a home pregnancy test and check. Likewise if your period is different check a pregnancy test.