Contractions

Katy💙💖💙 • Jackson 21/12/12 my first love, Maisie 25/04/14 my little princess, George due 27/03/17 the final piece to my puzzle ♡♡♡♡
Just wondering how far people's contractions were apart to start with? I've seen some say 20 mins apart then some were close to an hour apart.