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Step 1
The first change that the cervix makes is positioning. Before labor, the cervix is usually high and posterior, meaning it points toward your back. As you get closer to labor, your cervix begins to move lower and forward into an anterior position. This can happen a few weeks before, a few days before, and perhaps even during the early part of labor.
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Step 2
The second change is that the cervix will soften. Typically, the cervix feels like the tip of your nose which is sort of firm. As you get closer to labor, prostaglandins will help to soften your cervix which during a vaginal exam, will now feel squishy, not firm. Semen also helps to soften the cervix.
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Step 3
The third change is that the cervix will efface or thin out. This means that the length of the cervix shortens. Effacement is measured in percentages. 0 percent means that the cervix has not thinned at all. 50 percent means the cervix is about half the length that it was. 100 percent means that the cervix is paper thin and marks the completion of the effacement phase.
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Step 4
The fourth and final change is dilation or opening of the cervix. Dilation is checked during a vaginal exam and is measured in centimeters. Measurement begins at zero centimeters dilated to 10 centimeters. Ten centimeters is the point at which you'll be encouraged to push.









