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Pregnancy Mood Swings at 39 Weeks Pregnant | Pregnancy Power Hour
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Week 39 symptom · mild

Pregnancy Mood Swings at 39 Weeks Pregnant

At 39 weeks, emotional shifts are common, often stemming from hormonal changes, the anticipation of birth, and significant physical fatigue.

2 min read

Quick answer

At 39 weeks, emotional shifts are common, often stemming from hormonal changes, the anticipation of birth, and significant physical fatigue.

Also called: emotional shifts

At 39 weeks pregnant, the emotional shifts you might be experiencing are often a complex interplay of hormonal changes, the profound anticipation of meeting your baby, and the significant physical fatigue that comes with late pregnancy. This particular stage brings a unique blend of excitement, readiness, and sometimes, a deep sense of uncertainty about what's to come. It's a time when your body is working incredibly hard, preparing for birth, and these physical demands can naturally deplete your emotional reserves, making you more susceptible to mood fluctuations.

It's important to know that these mood fluctuations are nearly universal in pregnancy. Your body is undergoing immense hormonal changes, which directly influence your emotional landscape. Beyond the hormones, the life-context anxiety surrounding labor, birth, and welcoming a new baby can be substantial. Many people find themselves navigating a mix of eager anticipation and understandable apprehension. While your body is preparing for birth, you might also be noticing other late-pregnancy changes, like increased frequent urination at 36 weeks pregnant which can disrupt sleep and further impact your emotional state. Similarly, managing discomforts like frequent urination at 35 weeks pregnant or even earlier changes like frequent urination at 34 weeks pregnant can add to the overall physical and mental load, making emotional regulation feel more challenging.

While passing waves of emotional shifts are a common part of this experience, it's also valuable to recognize when these feelings might indicate something more. Persistent low mood, feelings of hopelessness, or anxiety that extends beyond temporary waves could suggest perinatal depression or anxiety. Research indicates that these conditions affect a significant percentage of pregnancies. Your care provider is your best resource for understanding your specific situation and can offer guidance and support.

One way to gain clarity on your emotional well-being is through screening tools like the Edinburgh Postnatal Depression Scale (EPDS). This tool screens for both depression and anxiety, and a score of 13 or higher may suggest a need for further clinical evaluation. The American College of Obstetricians and Gynecologists (ACOG) recommends screening at least once during pregnancy and again at one-month and three-month postpartum visits. Untreated perinatal mood disorders carry potential risks for both the pregnant person and the infant, so it's always a good idea to discuss any concerns with your provider. Evidence-based options like therapy and certain selective serotonin reuptake inhibitors (SSRIs), with sertraline being the most studied, are available and can be explored in collaboration with your medical team. Remember, you get to decide what feels right for you, and seeking support is a sign of strength.

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Common questions

Are mood swings normal at 39 weeks?+

Yes, mood fluctuations are nearly universal in late pregnancy, influenced by hormones, anticipation, and physical fatigue.

When should I be concerned about my mood?+

Persistent low mood, hopelessness, or anxiety beyond passing waves may indicate perinatal depression or anxiety, affecting 15–23% of pregnancies.

What is the EPDS?+

The Edinburgh Postnatal Depression Scale (EPDS) screens for both depression and anxiety; a score of 13 or higher suggests likely clinical concern.

What are options for support?+

Evidence-based options include therapy and certain SSRIs, with sertraline being the most studied. Discuss with your provider.

Brittany Nance

“Pregnancy is under-supported at every week. This is the kind of clear, calm guidance I give my one-on-one clients — and the questions worth taking back to your provider.”

Brittany Nance · Pregnancy Wellness Consultant · full-spectrum doula

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Written by Brittany Nance, Pregnancy Wellness Consultant· BADT Full Spectrum Doula · Founder, Pregnancy Power Hour
Last reviewed July 1, 2026

This is evidence-informed education from a birth-doula perspective, not medical advice. Always discuss your individual situation with your prenatal care provider.

Keep reading

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  • RelatedPregnancy Mood Swings at 36 Weeks PregnantAt 36 weeks pregnant, emotional shifts are common, often intensified by late-pregnancy fatigue, anticipation, and the nearing arrival of your baby.
  • RelatedPregnancy Mood Swings at 34 Weeks PregnantAt 34 weeks pregnant, emotional shifts are often a blend of late-pregnancy anticipation, increasing physical fatigue, and hormonal changes.