Surviving the Summer Heat in Pregnancy

Thanks to physical changes during pregnancy, like hormonal fluctuations and increased blood volume and cardiovascular output, pregnant people tend to feel warmer no matter the season. So, if you are pregnant in the summertime, you may find it difficult to get cooled off.

Before you were pregnant, feeling hot may have been a minor nuisance. But, getting too hot during pregnancy can quickly turn to overheating, which can be a serious health risk to you and your baby.

According to the Centers for Disease Control and Prevention (CDC), a body temperature higher than 102.2 F can lead to heat exhaustion, heatstroke, or dehydration. In addition, overheating can lead to adverse pregnancy outcomes like premature birth, low birth weight, stillbirth, congenital heart defects, and congenital disabilities. So, staying cool in the summer isn't just a matter of comfort; it's a matter of health.

Here are some things to keep in mind during the summer while pregnant.

Dehydration

Drinking water during pregnancy is vital because of the increased demands on your body. It is even more important to drink lots of water during the summertime because dehydration can cause Braxton Hicks contractions.

Not drinking enough liquid can lead to heat exhaustion. Signs of dehydration include:

• Dizziness or lightheadedness
• Nausea
• Headaches
• Muscle cramps
• Dry mouth
• Flushed skin
• Chills
• Constipation
• Dark-colored urine
• High heart rate, low blood pressure

Aim for 8 to 12 cups of water a day. Drink before you get thirsty—thirst can be a sign that you've waited too long.

Swelling

During pregnancy, your body retains more water, which means that some swelling, especially around your ankles and feet, is normal. However, when the weather is hot, swelling can be even more pronounced.

Excess swelling from the heat is called "heat edema." When the body experiences excess heat, blood vessels expand, which causes body fluids to move into the tissues, resulting in swelling.

Staying out of the heat can help you avoid excessive swelling in the summertime. If you do find yourself experiencing heat edema, try to rest with your feet up, take a cool shower, or place your feet in a pool or a basin of cool water.

Sun

During pregnancy, it's best to avoid direct sunlight. If you are in the sun, use a 30-45 SPF sunscreen. Avoid restrictive clothes, which can increase your discomfort and add to swelling problems.

Limit outdoor time to the cooler parts of the day—early morning and early evening—rather than high noon. And when you do go out, stay hydrated by drinking even more than the recommended 8 to 12 cups of water.

When to Call Your Practitioner

Most of the time, the summer heat is a nuisance that can be managed. But sometimes, it can lead to overheating, resulting in risks to your pregnancy and your baby. So remember to watch out for pregnancy warning signs that warrant a call to your doctor:

• Regular contractions or cramps
• Vaginal bleeding
• Leaking fluid from the vagina
• Swelling or puffiness of the face or hands (a sign of preeclampsia)
• Headaches or blurred vision (preeclampsia signs)
• Lack of fetal movement
• Pain during urination (possible urinary tract, bladder, or kidney infection)
• Pelvic or abdominal pain (preeclampsia signs)
• Low, dull backache

A Word From Verywell

Summer can be a great time to get out and enjoy your pregnancy. Many activities can still be done during pregnancy with a few simple modifications. Just keep in mind that overheating can happen far more quickly when you are pregnant, so take precautions when it's hot outside. And watch for signs that your body may be dehydrated or overheating.

If you notice any concerning swelling, have a temperature over 102 F, or experience any other symptoms that worry you, be sure to contact your doctor right away.