Is back pain generally a sign of an imminent labour? I am 37 weeks and its not the kind of ache you get just from the weight of everything iyswim? It is a constant pain not unlike the sort you get with a period, really low down and achey. I've had it since yesterday. I have been having lots of tightenings on the bump, but no pain ont he front, and the pain doesn't really worsen in my back, it is there all the time. What's making me wonder is that I saw the midwife yesterday and she sent a urine sample off as there might be an infection, but she has said this for the last month, I've had 4 samples sent off and each time it has come back clear. Could a back ache like this just be more indicitive of an infection?