I think I've started nesting

37 weeks 1 day and I think it's started. Last night I felt like crap all night and couldn't sleep, cramps and bad back pain. It got me scared that I wasn't prepared. Then today we got the car seat in, baby's laundry finished, clothes organized and started cleaning the house. Packing my bag tomorrow :) I was afraid I wasn't going to feel the need to nest... Guess it just came a little late for me :)