Teasing me - still pregnant

So last night (40 weeks exactly), I started having contractions. They got to about every 5 minutes after 3 hrs, then just went away .

Today, I walked and went to work as usual, and around 1 pm I started having contractions again. I asked my boss to leave around 3 (about an hour early), because contractions were every 10 minutes and I needed to prep some stuff at the house. Contractions continued for 7 hours, getting to be every 3-4 minutes. Then I took and shower and they went away.

So here I am, overdue, still pregnant and apparently having contractions for no Damn reason every night. Anyone else in my boat?