Not really tired...just sleepy

One of the early symptoms of pregnancy is being tired. For me, it doesn't seem to be tired so much as sleepy. There are two evidences of this:

1. I want to take a nap fairly often. Normally, I rarely take naps.

2. I want to go to sleep by 9:30 or so. Normally, I can stay up to midnight and still be going strong.

Matt likes that I am ready to go to bed earlier because he normally tries to wait on me and then doesn't get enough sleep. I normally still get plenty of sleep since I don't get up until around 8:00 most days. Matt on the other hand, has to get up at 5 or 6 most of the time.