Is this a sign?

I'm 39 weeks and 1 day gone and for the last week or so I've had period type prangs on and off and on Wednesday night I woke up soaked from the belly down. I went to hospital to be checked out yesterday and they said it may have been my "back waters" but I wasn't in labour so sent me back home. Again I've had little twinges on and off today and bled a little constantly since they did and internal exam yesterday morning (dr says the bleeding is nothing to worry about as long as it's not getting heavier or fresher looking) and tonight I've started having stabbing pains right up my hoo-ha and a lot of pressure really low and my belly is rock solid down low too. This is my first baby so not sure of this means d day is close?!  Thanks in advance!! Xxx