Am 40+5 weeks pg, baby number 4. Have had one 5 days early, and the last 2 bang on the due date..
For the last week or so, the pressure bearing down is immense, mainly in the evenings, but comes to nothing. I have had no regular contractions (that I would recognise as familiar) but my belly is virtually permanently hard, like one long braxton!
It feels for the main part as if I could cough it out!
On Friday at the MW appt, the head was FULLY engaged and she could barely feel the top. Got my Mum down as I really felt things could get moving. I have been under a stupid amount of stress, and the MW said I needed to be able to chill in order for things to progress.
Have done non stop chilling since then but still nothing. 
Is it possible that I am already in labour? Can you progress quite fast without any definite contractions? Am feeling very lost at the moment; have another MW appt tomorrow though.
Anyone out there been through similar? Going mad here!