Overdue & No Sleep

Deena
I was due on June 18th, which makes me 4 days overdue today. Throughout the entire pregnancy I've gotten amazing sleep, between 8-10 hours a night without having to wake up at all (even to pee). Since this week has begun, I haven't been able to sleep anymore. I don't feel tired! I am up the entire night, sleep from 6am to 10am & then I'm up the entire day/night until the next morning at 6am. It's so odd and I'm wondering what on earth is wrong with me. I used to NEED 8-10 hours every night and now I'm just fine with the 4 measly hours that I sometimes get during the morning. Is anyone else struggling with this?