If you are somewhat like me, you probably are aware of this sleep "weirdness" as well. You are sleeping, but yet, you seem to know what is happening in the room you are sleeping in. I had noticed it long before I had my little girl, but with her it is more prominent then it was before. Let me give you an example: she snores (not like her father, but she does snore), and all of a sudden tonight, she stopped and I woke right up. I had to get up and check on her. So, while I'm feeling her belly, and slightly "bothering" her to get her to move, i'm freaking myself out when she isn't moving quick enough. Then what happens?? You just about wake them up out of a deep sleep. Nothing better then waking up your little one at 2:30 a.m.
Ahhhhhhhhhhh, the joys of motherhood, lack of sleep and all.