I'm having exactly the same thing and I'm just over 5 weeks too (btw join the December Belly Buddies! ) The last 2-3 nights there have been reasons... tonight was my dry mouth. The previous 3 was a cold keeping me awake. But before that I was also waking around 3am and not being able to sleep again until 5am or so. I wish I knew why so it could help us both, but I don't