I started to lose my plug at 38/3 - it was clear & with pink tinges at first then clear & red. I lost bits and pieces all day long. I was also getting period type pain & noticed the bub drop massively that morning. By lunch time the odd contraction would happen. Labour started that night & he was born the following afternoon at 38.4.

I'm not sure about getting down on all fours - I heard the best thing was to walk so I went walking in a shopping centre which seemed to help bring it on... that's where I was when contractions started.