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If sleep feels harder than ever during pregnancy, you're far from alone — a large majority of pregnant people report some degree of insomnia, and it tends to shift in character across the three trimesters.
Why pregnancy disrupts sleep
- Hormonal changes — rising progesterone and other hormone shifts affect sleep architecture directly.
- Physical discomfort — a growing belly, back pain, and difficulty finding a comfortable position, especially later on.
- Frequent urination — increased blood volume and pressure on the bladder mean more nighttime bathroom trips.
- Anxiety or racing thoughts — worries about the pregnancy, birth, or upcoming changes are extremely common.
- Heartburn and reflux — more common later in pregnancy and often worse lying down.
How it tends to shift by trimester
First-trimester insomnia is often tied to hormonal shifts and nausea. The second trimester is sometimes the easiest stretch for sleep. Third-trimester insomnia tends to be the most disruptive, driven by physical discomfort, frequent urination, and the practical difficulty of finding a comfortable sleeping position with a full-term belly.
What tends to help
- Sleeping on your side (generally the left, though either side is fine) with a pillow between your knees.
- A pregnancy or body pillow to support your belly and back.
- Limiting fluids in the couple of hours before bed to reduce nighttime bathroom trips.
- A consistent wind-down routine — dim lights, no screens, light stretching.
- Eating dinner earlier and avoiding spicy or acidic foods that can trigger heartburn.
- Gentle daytime exercise, if your provider has cleared it, which can improve overall sleep quality.
A note on sleep aids
Many common over-the-counter and prescription sleep aids aren't recommended during pregnancy, or need specific guidance on timing and dosage. Always check with your OB or midwife before taking anything for sleep, including "natural" supplements, since not all of them have well-established safety data in pregnancy.
When to bring it up with your provider
Occasional rough nights are normal, but persistent, severe insomnia — especially alongside significant anxiety, restless legs, or snoring/gasping (a possible sign of sleep apnea, which becomes more common in pregnancy) — is worth discussing at a prenatal visit rather than just pushing through.
