Is This Our Baby?

Our 2-month old is changing! Lil P slept through the night the other day. She slept from 9:30 pm until 5 am. I couldn't believe it! She stirred a little around 3 am, but I chose to ignore it. She must've fallen back to sleep because before you know it, it was 5! Was this a fluke? Then, I nursed her and she was back to sleep for a couple of hours.
This was the day that RT and I did the baby swap. Around 1:15 pm, I drove to Cuesta with her screaming her head off. Then, she was asleep the whole time I was at work. I came home about 6pm, and she was just waking up! Nursed her again, she fell back asleep.
Now this timeframe, between 5pm through 9pm is usually the most difficult for us. She's usually up and crying, pretty fussy. But miraculously that day, she was asleep. I must confess, around 11pm I woke her up. I know! I know! Don't wake a sleeping baby! I was just concerned because she's NEVER slept this much. Was she getting enough to eat? Her diaper must be sopping wet! I nursed her, and it was a bit harder for her to go back to sleep. She did sleep unfitfully this night, waking up every couple of hours.
So, was this a fluke?
Last night, she went to sleep around 9:30 and did not wake up until 6:30 am! Whoo-hoo! Am I beginning to see a pattern or schedule? Dare I say that our baby is sleeping through the night at 8 weeks old?