12 hours late taking pill after sex?

So, I've always been good about taking my birth control pills at the same time every day, other than one time in the past week where I forgot to set my alarm and took it at 11am instead of 6am. After this happened I thought that would be an ok time to move my 6am pill alarm to 8am (I'd been planning to do this because my work schedule changed). I'd been taking the pill at 8am for about a week or two.

Anyway, my partner and I had unprotected sex yesterday. Today, I accidently forgot to set my alarm again and didn't remember my pill until 8pm today. So, I took my pill 12 hours late. My partner did use the withdrawal method (ik there's still always a chance of pregnancy though), but did my chances go up a lot after taking the pill this late?

If this matters much, we had sex within the 24 hours of yesterday's pill. So I feel like I'd still be mostly protected. I was just curious if my risks went up any higher by taking the pill 12 hours late the day after.