Chances of being pregnant

Hi, I’m still trying to find out how long my cycle is as it changes each time but usually 30 days long.

about 12 days ago on the 26th of March I had unprotected sex and he pulled out but before we had sex I gave him oral and he ejaculated so cum could’ve still be on his penis and then we had sex pretty much right after.

I later went to put it in my app that I had sex and realised we had sex day of ovulation, then a couple days after had some light pink discharge it wasn’t like period spotting as it was such a light pink and I’ve never had that before

My period is due in 3 days

I’m just curious on my chances of getting pregnant even though he didn’t ejaculated inside.

Thanks