Can You Tell If You're Pregnant By Checking Cervical Mucus?

Vaginal Discharge, Implantation Bleeding, and Leukorrhea During Early Pregnancy

Woman looking in a magnifying glass to exam cervical mucus in early pregnancy
You can exam your cervical mucus all you want during the two week wait, but it's not going to tell you if you're pregnant or not.. alvarez / E+ / Getty Images

Does cervical mucus change during pregnancy? And can you detect early pregnancy if you pay attention to these changes? It's a common question during the two week wait. Many women track cervical mucus changes during their cycle so they can time sex for pregnancy.

So... can your cervical mucus tell you if you're pregnant?

Here's the disappointing answer: not really.

I know how tempting it can be to look for signs of pregnancy.

And, since cervical mucus can tell you when you're ovulating, it seems logical to assume it may also offer clues to an early pregnancy.

Unfortunately, your vaginal discharge may not differ much from what you'd see just before menstruation.

How Does Cervical Mucus Change During Pregnancy?

You may have heard of the term leukorrhea. This is the name for normal vaginal discharge. It is usually thin and milky-white.

The term is frequently used when referring to vaginal discharge during pregnancy, but leukorrhea is also present in non-pregnant women.

During pregnancy, leukorrhea production increases. This is due to increased estrogen and blood flow to the vaginal area. (These are the same reasons for the increase in cervical fluids when you're about to ovulate!)

You might think you can look for the "extra" leukorrhea to detect early pregnancy. But it's not possible.

Leukorrhea changes don't become noticeable until at least 8 weeks or later.

The two week wait (which would make you 4-weeks pregnant, if you're pregnant) would be way too soon.

Cervical mucus plays an important role in your reproductive system. When you're in the non-fertile stages of your menstrual cycle, it becomes thick and sticky to prevent infection. When you're about to ovulate, it becomes more watery and abundant.

This allows the sperm to more easily swim and survive.

When you're pregnant, cervical mucus again has an important job. It increases to develop what will become your mucus plug.

Your mucus plug begins building up in the first trimester of pregnancy. Eventually, it will block the opening of the cervix. This is to prevent infection from entering the uterus and harming the baby.

At the end of your pregnancy, as the cervix begins to dilate and prepare for childbirth, the mucus plug will break down. It may come out in small bits or in bigger clumps.

What About Brown or Pink Tinged Cervical Discharge?

What if you see brown or pink tinged discharge? Could this be a sign of early pregnancy?


Brown or pinkish vaginal discharge could be what's known as implantation bleeding. It's called implantation bleeding because it's frequently seen around the time that an embryo would be implanting itself into the uterine lining.

(There's very little evidence that this is what actually causes the spotting. But that's where the name comes from.)

Even if you see this kind of spotting, it may not be a sign of early pregnancy. There are a number of possible causes for mid-cycle spotting.

What if I Notice More Discharge Right Before My Period?

Those that track their cervical mucus know that it pretty much dries up after you ovulate.

You may notice an increase of discharge again right before your period is due. Could that be pregnancy related?

No, not really. Increased blood flow, changing estrogen levels, and the cervix preparing for menstruation can cause this increase in watery discharge.

It's not a pregnancy sign.  

In the end, you're better off not trying to predict whether you're pregnant by checking your cervical mucus.

As frustrating as it is, you'll have to wait until your period is late and take a pregnancy test.

More on pregnancy signs and testing:

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