Pebbles was 7 weeks when we got her, too. She is now 9 weeks.
We may have been really lucky, reading the posts on here
She still wee's on paper in her pen overnight (a little), but has had 3 'clean' nights in a row now (crossing fingers, but not really expecting it to last at mo)
She cried right through first night, and second, then a bit from 4:30 for couple of nights. Now, we come down around 6:30-7:00, to a happy little puppy.
One thing we found, and took us a week to see it, but Pebbles does get more 'bity' and a little aggressive, when she is tired - still can't get over how much she sleeps.
We found gentle play worked better, as she wasn't over excited, and now goes to her cage quite often for a nap, on her own