Tiredness in Pregnancy: Normal Exhaustion and Anaemia

Tiredness in pregnancy: how to think about it

NHS guidance describes tiredness as very common in the first 12 weeks of pregnancy, driven by hormonal changes, and returning for many people in the third trimester when sleep is disturbed by physical discomfort and frequent waking. Between those, many people feel more energetic in the second trimester. The guidance suggests rest, iron-rich food and gentle exercise, and specifically flags anaemia as a cause worth testing for rather than assuming. Iron deficiency anaemia is common in pregnancy because blood volume rises substantially and iron demand increases, and it is routinely screened for at booking and around 28 weeks. It is treatable once found, which is why persistent exhaustion is worth raising rather than enduring. Mental health is the other thread NHS draws out: low mood and anxiety are common in pregnancy and can show up as fatigue, so tiredness that comes with loss of interest or persistent low mood deserves a different conversation.

Tiredness: safer choices

• Resting when you can and going to bed earlier, which NHS puts first. Early pregnancy tiredness is hormonal and does not respond well to pushing through.
• Eating iron-rich foods such as red meat, pulses, dark leafy greens and fortified cereals, and pairing them with vitamin C to help absorption.
• Asking for a blood test if tiredness is persistent or worsening. Anaemia is common in pregnancy and is straightforward to treat once identified.
• Gentle activity such as walking or swimming, which tends to help energy rather than drain it.
• Raising it at antenatal appointments rather than assuming nothing can be done, particularly if it is affecting daily life or work.

Tiredness: what to avoid or double-check

• Do not start iron supplements on your own without a blood test. Unnecessary iron causes constipation and nausea, and the dose should match the result.
• Avoid using caffeine to push through. Pregnancy guidance is around 200 mg a day, and it disrupts the sleep that is already disturbed.
• Do not ignore tiredness with breathlessness, palpitations, dizziness or unusual pallor, which point more strongly to anaemia and need assessment.
• Avoid assuming exhaustion is purely physical. NHS notes low mood and anxiety are common in pregnancy and can present as fatigue.

How SafeMama helps

SafeMama can check iron supplements, prenatal vitamins and energy products, including doses and combination formulas, which matters because iron content varies widely and some energy products contain caffeine or herbs worth checking.

Open the SafeMama app, scan the barcode or search the ingredient, then use the result as a starting point for a conversation with your healthcare provider.

Sources

• NHS tiredness in pregnancy
• NHS mental health in pregnancy
• ACOG nutrition during pregnancy