I did ask my MWs about this too. They said that its normally not a worry (perhaps if there was a risk of preterm labor, things would be different). They said as EDD approaches its possible that nursing could make contractions stronger/more intense but didn't seem to think that it would *start* labor. Might augment it. They also both agreed that a child my daughter's age (almost 2.5) is probably not really nursing enough or with enough vigor to have that much effect.
I'm reviving this thread to ask about nursing and Braxton-Hicks? The nursing-induced contractions are quite strong and very uncomfortable, is this going to throw me into premature labor? I'm 34 weeks right now and I have SO MUCH to get done at work before this baby comes, I really do not want to go early *at all* (meaning before 40 weeks, never mind the obvious reasons to avoid having a preemie or near-preemie baby). DD came at 38 wks 5 days and I was so not ready.