I've been loosing pieces of my mucus plug since 26 weeks... if there is no blood in it, it will regenerate.

As ^ said, it depends on the color. Mine was a muted white color, real thick and slimy, and then got more reddish as days passed, then went to clear, but each time it kept the consistency.
Baby could come shortly after passing it (if it is your plug) or they could end up waiting a few more weeks. Mine came about 3 weeks after losing mine.

Depends on what it looked like I've read the mucus plug is reddish. But also that you can loose some and it regrows