Welcome to MFC where sometimes they don't pay out until the 5'th, or even 6'th if holidays and weekends line up right.
The first was a Friday, that means that they won't pay then. They're too busy enjoying their Fridays.
Monday was a holiday.
So your check wasn't even sent until Tuesday or Wednesday, depending on how lazy/backed up they are.
Add three or four days depending on which part of Alabama you're in for shipping, and you might not get it until as late as this Friday or Saturday.