Late period, no longer breastfeeding

So, my period is only 3 days late at this point—not sure if I should worry yet.

I quit nursing my daughter (now 21 months old) last week. She had only been night nursing anymore, but I really wasn’t producing anything for her at this point, so I held her instead when she’d wake up to feed and now we haven’t been nursing for a full week! Yay!

But now my period is late when it’s been pretty regular since shortly after she turned 1. Last month it was off by a day, but was otherwise normal. Now I’m 3 days late. 😳 Anyone else experience this?