# Low Blood Pressure in Pregnancy

Source: https://www.pregnancypowerhour.com/conditions/low-blood-pressure-pregnancy
Last updated: 2026-07-15

> Low blood pressure in pregnancy is a common and often normal physiological adjustment as your body adapts to support your growing baby.

## What it is

Low blood pressure during pregnancy, often called hypotension, is a common and usually normal physiological adjustment your body makes to support your growing baby. In the first and second trimesters, it's quite typical for blood pressure to naturally drop. This is largely due to the hormone progesterone, which helps to relax and widen your blood vessels, a process known as vasodilation. This increased blood flow supports your uterus and placenta, but it can also mean a lower overall blood pressure reading.

There are a couple of specific situations where low blood pressure might become more noticeable. One is **supine hypotension**, which can occur after around 20 weeks of pregnancy when lying flat on your back. The weight of your uterus can compress the inferior vena cava, a major blood vessel that returns blood to your heart. This compression can lead to feelings of dizziness and nausea. Another common experience is **orthostatic hypotension**, where your blood pressure drops when you change positions, such as standing up quickly from sitting or lying down.

## What it tends to feel like

When your blood pressure dips, you might notice a few sensations. Dizziness or lightheadedness are very common, especially when you stand up too quickly. You might also feel a bit faint, weak, or even experience some nausea. These feelings can be unsettling, particularly when you're navigating so many other changes in early pregnancy. Understanding that these sensations are often a normal part of your body's adaptation can bring a sense of calm.

## What the evidence says helps

The good news is that there are several practical, evidence-based strategies that can help manage the symptoms of low blood pressure. The most important management strategy is **adequate hydration**. Ensuring you're drinking enough water throughout the day can significantly help maintain your blood volume and, in turn, your blood pressure. This is also helpful for other common pregnancy discomforts, like [Pregnancy Constipation](/conditions/constipation).

When it comes to your diet, **salt intake should not be restricted** during pregnancy unless your care provider advises otherwise due to developing hypertension. Adequate sodium helps your body retain fluids and maintain blood pressure. Eating **small, frequent meals** can also be beneficial, as it helps prevent postprandial hypotension—a drop in blood pressure that can sometimes occur after large meals. If you're experiencing symptoms, especially when changing positions, simply **rising slowly** can be incredibly effective in preventing dizziness. For some individuals who are particularly symptomatic, compression stockings can be a helpful option, as they aid venous return in your legs.

## Working with your care team

While a drop in blood pressure is often a normal part of pregnancy, it's always a good idea to discuss any symptoms you're experiencing with your care provider. They are your best resource for your specific situation. If you experience true hypotension, generally defined as a blood pressure reading below 90/60, especially if accompanied by persistent or severe symptoms, it warrants evaluation. This is important to rule out other potential causes such as dehydration, occult bleeding, or cardiac issues. Your doula can help you prepare questions for your appointments, ensuring you feel clear and confident in discussing your experiences and exploring your options with your doctor or midwife. Sometimes, similar symptoms might overlap with other conditions, like [Iron-Deficiency Anemia in Pregnancy](/conditions/anemia), so a thorough check-up is always a collaborative step. Staying well-hydrated is also a key factor in preventing conditions like a [UTI in Pregnancy](/conditions/uti-pregnancy), further emphasizing its importance.