Mucus plug or amniotic fluid?

Amniotic fluid is not mucousy, but more like water. Also if your membranes are ruptured you will continue to leak constantly, especially when you have a contraction. Most likely you will need to wear a pad to keep from getting your pants saturated. However if you are concerned, definitely call your doctor's office, and they should be able to talk you through it or will tell you to go be examined.