I'm 39 weeks and for the last couple of weeks I have had occasions every few days or so where I think I'm having a painful contraction and that things are getting underway so to speak, and then it turns out it's just trapped wind 
I didn't get this last time and the wind feels just like the contractions I had last time say at around 3cm dilated, ie.like period pains in my lower tuummy area and lower back.
Anyone else getting this? I feel like a gas balloon