Ovulation timing? Help please

I’ve been posting like crazy lately, but I’m so anxious/nervous/excited/stressed lol everything. Can you ladies let me know if ovulation would’ve happened yesterday or today? Last test is this morning with FMU. My peak was definitely yesterday, but I’m still confused when it comes to ovulation timing. I definitely had ovulation pains yesterday for sure, so I’m wondering if I ovulated yesterday and the egg is just chilling for the next 12-hours lol is that how this stuff works?? 🤔