I'm 37w today with my 3rd baby. In the last half hour I've been getting some back and stomach ache and feel ever so slightly nauseous. It's just come out of nowhere. I've not done anything so far this morning, just a lazy Saturday morning with my OH and children. Labour has started completely different on my other two children (although on my daughter the contractions were in my back but were more in waves; I'm not sure that these are). Wondering if anyone else's labour started off similar or whether I'm just thinking too much into it.