I slept with #1 months after #2 & I split up. The exact date was October 24th 2017. #2 & I ended up getting back together in November and were sexually active multiple times. I got my period November 27th 2017. Felt like a normal period w/ intense cramping, ECT. I did not get a period in December and January 17th I found out I was pregnant. I only slept with #1 that one time on that exact day. #2 I slept with multiple times from November to January upon finding out about my pregnancy. Could the father be #1 or #2?
If you only received #1's creamy cum load in October 3 days before your period came, then it is going to be #2 who delivered the creamy cum load that found your waiting egg!
November 27th is a heck of a lot more than 3 days away from October 24th... lol.
OP - I'd say it is #2.