Can Insomnia Be an Early Sign of Pregnancy?

Difficulty falling or staying asleep may occur in early pregnancy

woman in bed awake
KatarzynaBialasiewicz/istock

Women who are at an age and disposition in which it is possible to become pregnant may wonder about early signs or symptoms of pregnancy. Can insomnia be one of these early symptoms or physical signs of being pregnant?

Difficulties falling or staying asleep commonly plague pregnant and non-pregnant women alike, so is it a reliable indicator of being with child? Learn how sleep may change with pregnancy and whether insomnia itself usefully predicts the onset of being pregnant.

How Sleep Changes Early in Pregnancy

The first trimester of pregnancy includes many changes that affect a woman’s body. A handful of these changes can also undermine sleep in pregnancy, and some develop soon after conception. It is even possible for some of these early alterations to lead to symptoms characteristic of insomnia.

Women in the first 12 weeks of pregnancy commonly experience fatigue and excessive daytime sleepiness. Sleepiness or drowsiness may lead to an increased desire to sleep during the day, such as a propensity to doze or fall asleep when sedentary or to take naps. More specifically, sleepiness affects up to 37.5 percent of pregnant women at six to seven weeks and is due to increasing levels of the hormone progesterone. Progesterone often leads to increased sleep fragmentation, which may affect overall sleep quality.

Moreover, morning sickness, increased urinary frequency, back pain, breast tenderness, increased appetite, using your cell phone before bed, and anxiety can all disrupt sleep as well.

It is a reasonable conclusion that these difficulties would disrupt a woman’s ability to stay asleep, triggering awakenings that may contribute to insomnia if difficulty returning to sleep occurs.

By week 10 of pregnancy, women spend more time sleeping, with a longer sleep duration overnight, and frequent naps throughout the day.

This is partly due to the fact that sleep has become more disturbed by frequent awakenings, and the amount of deep sleep decreases. Many pregnant women complain that their sleep is of poor quality during this period. Fortunately, it tends to improve in the second trimester, before sleep again worsens with the physical discomfort of late pregnancy.

Can Insomnia Be an Early Indication of Pregnancy?

Even though insomnia is a common occurrence during pregnancy, is it a reliable early indicator of pregnancy? The short answer is probably "no." It may not occur often or early enough to be a useful physical sign of being pregnant. Moreover, insomnia is the most common sleep disorder in general, affecting millions of people of both sexes and all ages. Although it may be an indicator of early sleep disruption in some pregnant women, it occurs so often in others that it is not a trustworthy sign specific to pregnancy.

If you have insomnia, no matter the reason, you should seek help to sleep better. Cognitive behavioral therapy for insomnia (CBTI) is an attractive option to fix the condition without needing to rely on sleeping pills, which may not be safe to use during pregnancy. 

And if you think you may be pregnant, you should simply take a home pregnancy test or see your doctor to be certain.

Source

Kryger, MH et al. Principles and Practice of Sleep Medicine. ExpertConsult. 6th edition. 2017.

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