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Pregnancy Mood Swings at 40 Weeks Pregnant | Pregnancy Power Hour
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Week 40 symptom · mild

Pregnancy Mood Swings at 40 Weeks Pregnant

At 40 weeks pregnant, emotional shifts are often a blend of hormonal changes, anticipation, and the profound physical fatigue of late pregnancy.

2 min read

Quick answer

At 40 weeks pregnant, emotional shifts are often a blend of hormonal changes, anticipation, and the profound physical fatigue of late pregnancy.

Also called: emotional shifts

As you reach 40 weeks pregnant, the emotional shifts you might be experiencing are often a complex interplay of hormonal changes, the anticipation of meeting your baby, and the very real physical fatigue that comes with late pregnancy. This particular week can bring a heightened sense of waiting, which, combined with the significant physical demands on your body, can make your mood feel quite dynamic. It's a time when many parents-to-be find themselves navigating a spectrum of emotions, from excitement to impatience, and sometimes, a quiet apprehension.

Mood fluctuations are nearly universal in pregnancy, driven by the powerful hormonal shifts occurring in your body, alongside the life-context anxiety that naturally accompanies such a profound change. While some emotional shifts are a normal part of this experience, it's helpful to understand the difference between passing waves of feeling and more persistent patterns. For instance, just as your body might be preparing for labor with sensations like those you may have felt around Breast Tenderness at 36 Weeks Pregnant or Breast Tenderness at 37 Weeks Pregnant, your emotional landscape is also adapting.

It's important to be aware that persistent low mood, feelings of hopelessness, or anxiety that extend beyond these passing waves may indicate perinatal depression or anxiety. Evidence suggests these conditions affect a significant percentage of pregnancies. Your care provider is your best resource for understanding your specific situation, and they can offer guidance and support. Screening tools like the Edinburgh Postnatal Depression Scale (EPDS) are designed to help identify these concerns, looking for both depression and anxiety.

The American College of Obstetricians and Gynecologists (ACOG) recommends screening at least once during pregnancy, and again at your 1-month and 3-month postpartum visits. This proactive approach ensures that if you are experiencing more than typical emotional shifts, you can receive timely, evidence-based support. Just as you might have noticed shifts in your body earlier in pregnancy, perhaps similar to Breast Tenderness at 14 Weeks Pregnant, recognizing and addressing emotional changes is a vital part of your overall well-being. Untreated perinatal mood disorders can carry risks for both the pregnant parent and the infant, making it even more important to communicate openly with your care team. Therapy and certain medications, such as sertraline, are considered evidence-based options for support, and you get to decide which path feels right for you in collaboration with your provider.

Remember, navigating these late-pregnancy emotions with clarity and confidence is possible. Being grounded in understanding what's happening physiologically and emotionally can offer a sense of ease as you approach your baby's arrival. Your emotional well-being is a priority, and there are resources and support systems available to help you feel calm and clear during this significant time.

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Common questions

Are mood swings normal at 40 weeks pregnant?+

Yes, mood fluctuations are nearly universal in pregnancy, especially at 40 weeks, due to hormonal shifts, anticipation, and physical fatigue. It's a common experience.

When should I be concerned about my mood at 40 weeks?+

If you experience persistent low mood, hopelessness, or anxiety beyond passing waves, or if you score 13 or higher on the EPDS, it's wise to speak 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.

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