Third Trimester Pregnancy: Tips for Maintaining Hydration for the Safety of Mother and Baby

By: dr. Lia Anggraeni, Sp.OG

Entering the third trimester, a mother's body is working harder. Blood volume increases, the body feels hot more easily, urination frequency increases, and sleep is often less restful than before. During this phase, maintaining adequate fluids is crucial for the mother's comfort and the safe development of the fetus. The good news is, maintaining hydration doesn't have to be complicated. Simply understand your body's fluid needs, recognize the signs of dehydration, and know when to seek medical help.

Why is the Third Trimester More Susceptible to Dehydration?

In the final trimester of pregnancy, several bodily changes make it easier for a mother to lose fluids, such as:

• Increased sweating and feeling hot
• Urinating more frequently
• Continuing daily activities despite decreased stamina
• Appetite or drinking changes sometimes

Dehydration can also trigger false contractions in some pregnant women. Therefore, good hydration helps reduce discomfort and maintain uterine stability.

How Much Drinking Is Considered Enough?

Each mother's fluid needs can be different. However, as a practical guide:

• Try to drink water regularly throughout the day.
• Pay attention to the color of your urine: pale yellow indicates adequate hydration.
• Avoid waiting to feel thirsty, as thirst often occurs when the body is already dehydrated.

Water is the best choice. Milk can be consumed if it's easy on the stomach. In certain situations, such as after vomiting or diarrhea, electrolyte fluids can be helpful, but should be used as directed by a doctor or midwife.

Limit high-sugar drinks, as they can make you thirsty again quickly. Caffeine consumption should also be limited during pregnancy.

Drinking Tips for More Comfort

Drinking small amounts frequently is more comfortable than drinking a lot at once. For example:

• Take a few sips every 15–30 minutes.
• Always carry a water bottle with you when you're active.
• Increase your fluid intake during hot weather or increased activity.

This method helps prevent bloating and reduces excessive urination at night.

Recognize the Early Signs of Dehydration

Immediately increase your fluid intake if you experience:

• Dark, small amounts of urine
• Dry mouth
• Dizziness or weakness
• Heart palpitations
• Mild headache

In the third trimester, if false contractions become more frequent, try resting and drinking water.

When Should You See a Doctor?

Do not delay seeking medical attention if you experience:

• Severe dizziness to the point of fainting
• Severe headache that doesn't improve
• Blurred vision
• Shortness of breath or chest pain
• Regular and increasingly strong contractions
• Vaginal discharge or bleeding

These symptoms require immediate examination to ensure the safety of the mother and fetus.

FAQ

1. What's the easiest sign that a pregnant woman isn't drinking enough?
   Urine tends to be darker/concentrated. A common rule of thumb is that pale yellow urine indicates adequate hydration.
2. Is it true that not drinking enough can cause false contractions?
   Yes, dehydration is known to be a trigger for false contractions in some pregnant women.
3. How many liters of water do pregnant women need?
   Scientific references often state that total water intake is around 3.0 L/day, including food. Practically, drink in installments and monitor your pale yellow urine.

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