I stumbled on this thread after a Google search looking for answers about back labour.  Don't know that I have much to add but I did find the other comments interesting, and thought I'd share my (and my daughter's) experience just as a point of reference for others.   I had three children - the first two were boys, and I had no back labour at all with either of them.  The first was 7 lbs 2 oz, the second 9 lbs 2 oz.  My only experience with back labour was with my...