Last time I didn't have a show until I was in labour for hours, and it was 100% a show - a big blood streaked blob of jelly. Just been to the loo (well, 1/2 hour ago) and had a big smear of mucus, slightly yellowy like a BIG clean bogey, but I have just been doing some more physical housework so don't know if that causes just general mucus? Or would dislodge the plug and it doesn't really mean anything in terms of labour...