How do i know i have lost my mucous plug?

A challenge: It is not always obvious. The "mucus plug" is more a concept than an actual object. As the term cervix matures, softens and dilates, the mucus barrier will be excreted. This may appear as a thick wad of mucus with small amount of blood or if slowly lost, just an increase in vaginal discharge. Confirmation usually comes with a cervical exam showing effacement and dilation.

Bloody show: A bloody show or lost mucous plug involves a "glob" of mucous mixed with a tinge of blood excreted in the last portion of he 3rd trimester prior to or at the beginning of the labor process.