Pregnancy: Understanding Vaginal Discharge, Mucus Plug & Baby's Descent (39 Weeks)

Question
I AM IN THE 39TH WEEK OF PREGNANCY, BABIES HEAD DOWN AND DROPPED, 50% EFFACED, AND HAVE NOTICED A CLEAR DISCHARGE WHEN I URINATE AND A STEADY MOISTNESS IN THE VAGINAL AREA THE LAST TWO DAYS, I FILL I HAVE TO TIGHTEN THE VAGINAL MUSCLES OR SOMETHING WILL FALL OUT, IS THE MUCOUS PLUG IM PASSING?

Answer
The feeling of "something falling out" is caused by the baby dropping and engaging further into your vaginal canal.  If you were to reach inside, you might find that your cervix has dropped very far down.  The extra moisture and discharge is normal, and part of your body preparing for birth.  The mucous plug is much more than a discharge; it has more of a thick consistency, like a huge glob of snot (you'll believe me when you see it).  It sounds like your body is gearing up, though, so good luck and congratulations!