Pills

I (F18) had unprotected sex yesterday in the afternoon with my partner (M22)
It was our 3rd round we had unprotected sex while the first 2 rounds we had used condoms. He had come already in the first round but not after the next 2 rounds. He had come in the 1st round after jerking off to my face and he cleaned his penis off with water. It was a light rinse and he isn’t circumcised.

My predicted ovulation day was on Nov 11.

It was after 1 hour or so we started with 2nd and 3rd round. Like I said the last round was unprotected but he didn’t cum, It was just his smeg. He kept pulling it out after 2 or 3 strokes and was cleaning it with a towel.
I want to take the pill but I have read that taking Plan b while ovulation would not work and that there’s a chance I might become pregnant though the chances are really low. I don’t want to take risks.

Not to mention, today I noticed that I have been bleeding a little bit.

My partner is concerned and is telling me that he won’t have sex with me anymore cause he’s really worried that I’ll become pregnant.

I’m really concerned if the pill would work as I’m currently going through ovulation. My partner didn’t cum inside me but it’s just that I’m worried.

Please help me out on this.