I am 37 + 6 and for a few weeks have been having painless tightenings of my bump, which I assumed were bh contractions. Last night though I woke up with period type pains low in my bump. They came and went for a bit but there was no regular pattern to them. I did wake dh as I thought that they could be the start of things, but then they seemed to ease off and I went back to sleep. What was this? Should I be concerned or ring midwife or was it just the bh picking up in intensity...