The major headache didn't keep me up all night thankfully, but it was bad enough that I chose to stay home from church and rest even though the headache had faded a bit by the time it was time to go to church...I figured some of it was being overpeopled, so stayed home to enjoy some quiet.
The headache lingered throughout the day but after dinner with the family it vanished. So yay! :D 
Not sure what made it go away but I'm guessing enough of a distraction helped it to flee.