Oh I remember the pre labour, mine started at around 37-38wks, and the day i had real labour pains, I went out shopping and visiting friends thinking it was the same old pre labour stuff! I went into spontaneous labour at 40w6d, Unfortunately for me, after about 24hrs or so I had an emergency c-section as my little princess had turned head up and was stuck!

Best of luck! PS - there is no mistaking the real thing once it kicks off!!