40 Weeks Of Pregnancy Nausea


It is quite common for women to have tiredness and signs of nausea in the initial stages of labor. Researchers even say that nausea during pregnancy is one of the good signs, and it indicates that you are on the healthy side. However, these morning sickness signs usually end with the first trimester. So what if it reappears again when you are in your 40 weeks of pregnancy? Is it considered normal or is it unusual to have morning sickness in your third trimester.

Is it normal or not?

It is very difficult to say if all these symptoms can be considered as the expected normal symptoms during the end of pregnancy. All women are different, and the signs of labor also vary among women. Some are better noticed when compared to others.

Cause of nausea

Nausea in the early stage of pregnancy is common, but its causes are not completely studied. It is believed that nausea is caused by the production of the hCG (Human Chorionic Gonadotropin) hormone that is also called as pregnancy hormone. Although it is said that hCG is produced when the fertilized egg gets attached to the uterine walls, its contribution to morning sickness is not clearly known. Rise in estrogen hormone and the other physical changes that happen in the body contribute to nausea. Usually, it starts within 4-8 weeks of gestation and ends by the end of the first trimester. However, the cause of nausea during the last stage of pregnancy remains unknown.

Some women have reported having nausea and extreme tiredness before labor, and they had early signs of labor. As said earlier, each woman has different symptoms and signs, and none of these can be considered as universal signs of labor. Some other theories state that nausea during pregnancy can also be the body’s ways to reduce fetal exposure to dangerous substances in your diet.

If you skip any of your meals, it is quite common to have nausea because of acid build up in your stomach. So munching small snacks on regular intervals is super important throughout your pregnancy. Having healthy snacks like fruits, nuts, and dry fruits will help to make you feel fuller.

When to see the doctor?

With all these hormones produced in your body, nausea is very normal. Your body might be getting ready to deliver your baby. Even after eating right foods at regular intervals, if you still see these symptoms accompanied by heartburns or some other serious issues, then it is time to see a doctor. Always convey things to your midwife so that she can suggest the correct options for you and can help you to find the time to get admitted to the hospital.

Changes in your body

By the 40th week, your uterus will be the largest muscle in your body. It is a beautiful way of nature in preparing your body to deliver your new bundle of joy. You may experience certain changes, sickness, and tiredness during this time that may or may not be early signs of labor.

  • Difficulty in sleeping

Your big belly might make it uncomfortable for you to sleep these days. Some women find it comfortable when they sleep on a comfy recliner chair. Always sleep in a way in which you are comfortable with.

  • Diarrhea and morning sickness

In the 40 weeks, you may experience frequent bowel movements or moderate diarrhea. This is accompanied by vomiting sensation and nausea. It is not pleasing to experience the morning sickness and other symptoms in the late stage.

  • Cervical dilation

Cervical effacement or dilation can take place with or without your knowledge. As you are about to enter your labor, your cervix will continuously efface and dilate. When you are ready to deliver your baby, your cervix will be dialed to around 10 centimeters.

  • Water breaks

If you have regular contractions, your water breaks when it is time. Some women have also reported that they didn’t feel any contractions until after the water breaks. Water break is a sign that your baby is ready to come out. When your water breaks, it is similar to a dramatic situation where it is a gush of fluid. Some might feel a trickle down of fluid from the vagina.

  • Pelvic pressure

During the final weeks, the baby will be lying in a head down position, and it is common if your baby bumps against your hips. This may cause you a little discomfort but understand that this is not uncommon.

  • Braxton hick’s contractions

These contractions will become intense during the final stage, and they might turn to labor pains. If you notice that the contractions are not going away, and instead it comes back, then it is time for delivery. You should start timing your contractions at this time to know when the real time is. During your labor, you will start feeling real contractions.

Labor induction

Generally, you are advised to undergo a labor induction when the week 40 of your pregnancy ends. When your labor doesn’t happen on its own, you are expected to go on a labor induction to avoid the issues related to prolonged pregnancy. This is crucial because, after week 42, the efficiency of your placenta to deliver nutrients to your baby will reduce. So these can lead to unnecessary complications.

Some women may plan to induce labor for various other reasons like conveniences, etc., but this is not advisable because it may lead to premature delivery.


For some women, this may be their last week of pregnancy, but some may have a few more weeks to go. You will be feeling overwhelmed with anxious thoughts about your delivery day. Do everything to relax your mind and body and be ready to welcome your baby. Make sure you have stocked diapers and wipes and other baby essentials on hand. Keep your family and friends updated on your health condition. Always be connected to your near ones, family members, and your parents as they can give you some helpful tips. Although if it seems difficult, doing some simple exercise can definitely help you reduce your discomfort. Congratulations mom, beforehand!