Thanks for all your replies - I didn't expect them so quickly! Yes I think just going to bed and taking it easy might be the way to go. Fingers crossed I will be awoken in the middle of the night!
BG - thanks, I will definetely let you know when bub is here! I think after having DS at 40+14 I have been mentally prepared that it could happen again and it is keeping me sane
I wonder if lots of prelabour statistically does make the real thing shorter - is my cervix dilating with all this activity?