Glow stops at 40 weeks exactly?

I just noticed as we entered a new week that glow ends when you hit 40 weeks. What about us poor souls that keep going after 40 weeks?? I’m due Tuesday and I wouldn’t be surprised if this baby has an extended stay? I got induced with my last one at 42 weeks. At least I’m mentally prepared to go over this time. As a FTM, I thought of my due date as an “end date”... pshhhhh- if I only knew. I’m on someone else’s time right now. But seriously, does the ap just end at 40 weeks time exactly??