a bit random

Jillian • expecting my first little one in January '17 💟
So, after having a membrane sweep done today I'm left wondering some things and thought I'd create a post to see if anyone has the answers. 
1) when preforming the sweep when does the doctor know they are done? Do they count to 30 while doing it? 
2) how did I go from being dilated a 1.5 to a 3 instantly? Anyone else experience that? 
3) is it better to stay active after it's done or rest? I've been bleeding some since so I've been taking it easy but had intended to walk ASAP. 
Hopefully some of you ladies can enlighten me :)