Help. No judging please.

Hi ladies. I'm currently 29 weeks pregnant and I ovulated on November 21. My question is my ex left me and I got super drunk and ended up hooking up with someone around 3am that morning... then my ex and I had sex later in the day around 1-3... and I'm just wondering if anyone knows who could possibly be the father? Based of my LMP, that's when I should have ovulated, but I was getting a little morning sickness already. I was getting sick. And my mil had already been telling me I was pregnant. A week later, morning sickness hit full force. So could I have ovulated sooner since I was already getting sick?? My period was also wacky that time around like it was really light and didn't last long....