Third Trimester Tiredness: Causes and Strategies

You are almost reaching the end of your pregnancy and all you want to do is to be able to give birth to your baby without any other hiccups along the way. However, you might be starting to feel tiredness wash over you in the 3rd trimester of pregnancy, especially in the very last month before you go into labor. What is the tiredness like, what are the causes and how can you fight it?

Causes of third trimester tiredness

pregnant woman tiredness fatigue

When you’re in the 3rd trimester or, specifically, in the last month of pregnancy, you might start feeling a little feverish and languid. The main cause is your big belly – your baby grows rapidly in the last trimester.

Good sleep might evade you. Regardless of whether you sleep face down, on your back or on your side, the bottom half of your body might swell and make it difficult for you to sleep through the night. You might find yourself having sufficient sleep in terms of duration, but your quality of sleep might be affected by the combination of factors such as the changes in the levels of hormones secreted in the last trimester, heartburn, the urge to urinate and even fetal movement.

As the baby grows quickly in the 3rd trimester and in the last month as well, you might not have enough vitamins, minerals and nutrients in general. Insufficient exercise and back pain can exacerbate the problem, and in general, if your metabolism slows down, that could make getting enough sleep difficult.

Strategies to fight third trimester tiredness

pregnant woman exercise



The most effective way of getting rid of your languor in the third trimester is to exercise. Exercise improves your blood flow and metabolism, so if you work out enough to make yourself a little tired, you might end up sleeping much better. You kill two birds with one stone – exercise will start preparing your body for the physically-challenging labor ahead, and this, in turn, might cause your cervix to dilate. There are many exercises you can consider doing, so pick one and get moving!



Be it folate, calcium, vitamins, minerals or iron, you need to have a balanced diet. In the last month of pregnancy, your baby will drop and their head will settle in-between your pubic bones. This will free your stomach from the pressure, but changes in hormone levels can cause pubic pain or make you feel physically all-out-of-sorts. Even if you don’t have much of an appetite, try to have as balanced a diet as possible!


Lifestyle habits

Know the saying, “early to bed early to rise, makes a man healthy, wealthy and wise”? You might want to start making retiring to bed early a habit.

Go to bed at a fixed time. Turn off all lights and try to make your room darker than a darkroom. Draw the blinds and turn off everything – from your cell phone, computer, the television – 30 minutes before you sleep. Try to refrain from taking naps in the day if it affects your sleep at night.

Don’t let third trimester tiredness become postpartum fatigue

pregnant woman relax

You find yourself saying “I’m tired” like a broken record on replay. Interrupted sleep is said to be as bad as no sleep at all, and if tiredness accumulates, you might feel emotionally low more often and have shorter attention spans. The last trimester, especially the last month of pregnancy, can be much tougher than the second trimester of pregnancy. However, all these problems will vanish into thin air when your baby arrives. Motherhood can be physically challenging too, though, so rest up before your D-day comes!