The only way I knew something was up was that night before bed the BHs felt different then normal...like they were 'sharper'. I had been having heaps of BH in the evening for weeks so it was nothing new. I just assumed it was the BH but just feeling a bit different.
Then at 3am I woke to go to the toilet and when I stood up out of bed my waters broke all over the floor.
I didnt start contractions until about 6.30am - 7am.
Oh yeah....I was 40+4. I didnt do anything to bring it on. No extra walking or extra s3x or curries, no clary sage or EPO.