What Is a Mucus Plug?

Cynthia Flynn's picture


Dear Midwife,
I am 38 weeks pregnant. People have been asking me if my mucus plug broke, but I don't know what that is. Could you please explain?

I want to know what it feels like when your water breaks and you start getting contractions. At 37 weeks my doctor told me that I am 1 cm dilated and she asked if I felt any contractions. I feel lots of different things and I dont know what contractions are like since this my 1st pregnancy. I really appreciate all your time and help.

Thank you.
T. Patel


The mucus plug is in the passageway between your vagina and your uterus, inside the cervix. Some women never see the mucus plug, some seem to lose it over and over again. It looks like a big gob of nasal discharge (snot) and may have red or pink or brown streaks. It may come out after a vaginal exam, or when you are in the very early stages of dilation.

Contractions that will result in a delivery are usually painful, regular, and they get longer and stronger over time. Labor contractions often begin by lasting 20-30 seconds every 5-10 min (early labor) and eventually get to where they are 45-60 seconds ever 2-3 minutes (active labor). If you are not sure whether you are in labor or not, you are probably not if it's your first baby.

Your water can break in different ways, sometimes it's just a constant dribble and sometimes it's a gush. Most women's water doesn't break until they are in active labor, but a few break early.

It sounds like you would benefit from a good childbirth education class or a book about labor (I like Penny Simkin's The Birth Partner). Good luck with your labor and delivery!

-- Cynthia, CNM, PhD.