31/08/2026
6 Causes of Severe Tiredness During Pregnancy
Feeling tired during pregnancy is common, but extreme tiredness can sometimes have an underlying cause.
1. Hormonal changes
Pregnancy hormones, especially progesterone, can make you feel unusually sleepy and drained, particularly in the first trimester.
2. Anemia
Your body needs more iron during pregnancy to make extra blood. If you do not have enough iron, you may develop anemia, which can cause severe tiredness, weakness, dizziness, or shortness of breath.
3. Poor sleep
Heartburn, frequent urination, body discomfort, leg cramps, or difficulty finding a comfortable sleeping position can leave you exhausted the next day.
4. Not eating enough
Your body is using more energy to support your pregnancy. Skipping meals or not getting enough nutritious food can leave you feeling weak and tired.
5. Dehydration
Not drinking enough fluids can contribute to tiredness, headaches, dizziness, and weakness. Keep drinking water regularly throughout the day.
6. Thyroid problems or other medical conditions
Problems such as an underactive thyroid or certain infections can cause unusual fatigue. If your tiredness feels extreme or does not improve with adequate rest, tell your healthcare provider.
Key takeaway:
Some pregnancy fatigue is normal, but you should not simply assume severe exhaustion is part of pregnancy. Get checked if you are extremely weak, frequently dizzy, short of breath, fainting, or struggling to carry out normal daily activities.
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