Honestly, this isn't surprising.

Similar to how the "Oh, now I have tons of time to work on my novel/get in shape/etc" folks are doing.

Yes, some people are being productive, but the last year has been... stressful. There was Pandemic stress, then Black Lives Matter stress, then the omnipresent Trump stress got ratcheted up into Election stress and Election Aftermath stress...

I doubt there are tons of people who were going, "You know what? This is the perfect time to try and have a baby!"

And since clubs and bars were massively curtailed, probably a lot less accidental babies too...