If nothing has happned yet some sex, an orgasm will do wonders ;) same hormones i believe, and another good nights rest!!! you still have a few more days, do your walking, excerise, house cleaning and some rest during the day, I am sure you will be in labour yourself soon, 2-3cm with contractions last night sounds good to me. Accupunture !!! I had a session early afternoon and that night, around tea time I was in labour.
Good luck.

