Hi. I Just Had Sex On Friday Night. But, He

hi. i just had sex on friday night. but, he did not ejaculate inside and just put his penis on the surface of my vagina. can it be considered as oral sex. and in fact. he did not ejaculate nearby me. but the pre ejaculation water makes me wonder if i can still get pregnant. due to my case, do i need to take postinor in order to prevent pregnancy.