Can i get pregnant from oral sex??

Rosie

We only had oral sex and he came in my mouth then we cumswaped. An hour later he went down on me. I was in my ovulation with the highest chance of pregnancy, about 33%.

My period is late for 21 days. (It is usually late but this time it’s more unusual than usual. I’m not going under any medications)

Please help! Does saliva kill sperms?