The loss of the mucus plug is not an indication of labor, but may hint that you are dilating more. Many women lose their plug 2-3 times during the course of the last trimester. Mucus plugs are there to protect the uterus and fetus from anything that might be in the vaginal cavity, therefore they will constantly reform until labor is really on. I think you need to relax because if you stress and worry your body will naturally hold off labor.
I started losing my bloody show about 8 hours before i was in actual full blown labor.. Good luck hope its soon for u. how far along are you?