It can happen anytime really. With DS it happened after my waters had broken at 39 weeks. With DD I never really saw it as I was induced so didnt take much notice.

I am sure others will jump on and say there experiences etc. But I definitely wouldnt worry too much. There is no time set on when you should lose your musuc plug. I can remember it being like thick clear vaginal discharge globs. Hopefully someone who has been through it more recently then me will enlighten you some more.

Goodluck Jac