Should I be thrilled or concerned?

Alyson

My little girl has been a good night sleeper for a while now, usually going 5-6 hours straight, eating then sleeping for 3, eating then 1.5-2. A few days ago she went to 5-6 hours then 4-5 hours with a meal in between, and then last night she went 11 hours straight. I don't know whether to count my lucky stars or be worried. Does anyone else have a baby sleeping for so long?