I'm on pregnancy number 4 and have never seen a plug. 2 natural labours and 1 induced. I think mine must go during labour, vague recollection of the midwife mentioning it last time. I'm not sure it really means much aside from your body getting ready. (Sorry if that sounds negative, I've been overdue 3 times and am 6 days away from being overdue again, I've looked out for every sign and symptom in the book and have never had any lead to labour! I guess I've resigned myself to not reading too much into anything any more)
Im 40 weeks on Saturday June 13th and I lost my plug this morning. Ive been having some back pain, but nothing crazy. Seeing it really shocked me... now im crazy excited and anxious to meet my little girl. We are so close lady's! Good luck
I will be exactly 40 weeks tomorrow and since yesterday I've been losing pieces of my mucous plug. I have an appointment tomorrow. I was hoping I would have more progress by now but nothing. It would be interesting to hear an answer to your question. Good luck and hopefully we will be going into labor very soon :)