5 Weeks Pregnant – Your Body, Baby & Vital Tips

You are five weeks pregnant, and there are a lot of changes taking place in your body. It is quite normal to feel a whole range of emotions.  The heightened hormone levels in your body are causing many symptoms like nausea, sore breasts, and fatigue. Learn more about the changes going on in your body and what to expect during this time.

When you are 5 weeks pregnant

During the 5 week of pregnancy or the third week after conception, the levels of hCG hormone increase substantially. The high levels of hCG signal your ovaries to stop releasing eggs and to produce more estrogen and progesterone. The increased level of these hormones stops your period. This is the time when most women discover that they are pregnant.


Many changes are happening in your body. Your uterus is starting to grow, even though it is still not evident yet. Some women feel bloated and feel as if they have gained a few pounds already. Others lose weight due to nausea.


The symptoms of pregnancy can be quite unpredictable. No two pregnant women experience the same symptoms. Many women who experience bad morning sickness during the first pregnancy do not feel any nausea the second time.  Here are some of the common symptoms when you are five weeks pregnant:

1. Morning sickness

Many women start to experience morning sickness around this time. The unpleasant nauseous feeling can occur at any time of the day. Women with twins are more likely to have morning sickness. Avoid spicy, greasy, or fatty foods. Eat small and more frequent meals. Keep yourself hydrated.

2. Spotting

It is common to see some light spotting at five weeks, which is most likely implantation bleeding. If you see a lot of blood or the bleeding lasts longer than two days, you must see your doctor right away to rule out complications.

3. Breast tenderness

The hormones may cause your breasts to ache as they are growing in preparation for breastfeeding. Sore breasts are the most common pregnancy symptom at five weeks.

4. Fatigue

During this stage, a large amount of your energy is going towards building a life support system for your baby.  This process can leave you feeling tired out. An increase in the level of progesterone can also lead to fatigue. Take a nap or rest whenever you can.

5. Mood swings

Hormonal changes can cause mood swings during pregnancy. Going for a walk, meditating, or listening to music can help.

6. Frequent urination

Due to the extra blood in the body, your kidneys have extra fluid to process. his causes the urge to pee more often during early pregnancy.

7. Excessive saliva

Pregnancy hormones can also lead to excessive saliva in the mouth.  Chewing sugarless gum can help.

8. Food cravings and aversions

The hormonal changes in the body can cause overpowering cravings or sudden aversions to food.

9. No symptoms

Some women may not feel any symptoms at all during the fifth week. This does not mean there is anything wrong with you; in fact, you’re quite lucky.

Your body at week 5 of pregnancy

Congratulations! You have entered the second month of your pregnancy. You are going through a whole range of symptoms and are already feeling a bit bloated. Bloating is the result of the heightened levels of different hormones that are circulating in your body. These hormones play an essential role in supporting pregnancy.

Human Chorionic Gonadotropin (hCG)

This hormone supports the corpus luteum, which is the first means of nourishment for the baby. The Hcg hormone is also responsible for maintaining adequate levels of progesterone.


This hormone is responsible for maintaining the placental function. It inhibits uterine contractions and stimulates breast tissue growth.


This hormone helps to maintain progesterone and hCG levels in the body. At this stage, you may wonder if it’s too early to gain weight or how much weight you should gain? Well, the answer to this depends on your weight before pregnancy. If you were healthy weight (BMI18.5 to 24.9) before pregnancy, your doctor would recommend that you gain between 25 to 35 pounds.

If a woman is underweight (BMI less than 18.5) before pregnancy, the recommended total pregnancy weight gain should be between 28 to 40 pounds. For an overweight woman (BMI 25 to 29.9), the doctor may recommend 15 to 25 pounds of total pregnancy weight gain.

Women with a BMI of more than 30 should not gain more than 11 to 20 pounds of weight during pregnancy. If you’re pregnant with twins, you are recommended to gain 37 to 54 pounds during your pregnancy.

Your baby at week 5 of pregnancy

During the 5 week of pregnancy, your baby is growing at a rapid pace. Several cells and organs like the blood cells, kidney cells, nerve cells, brain, spinal cord, heart, and the gastrointestinal tract are starting to develop. This stage is known as the embryonic period. Your baby is now the size of a sesame seed (3 mm) and looks more like a tadpole. The embryo consists of three layers at this stage –

  • Ectoderm – The neural tube responsible for the formation of the brain, spinal cord, nerves, and the backbone is developing from the ectoderm. The ectoderm will also form the skin, hair, nails, mammary and sweat glands, and the tooth enamel.
  • Mesoderm – The mesoderm is responsible for the formation of the heart and circulatory system. It will also form muscles, bones, cartilage, and subcutaneous tissue.
  • Endoderm – The endoderm will form the lungs, intestines, urinary system, thyroid, liver, and pancreas.

Tips for week 5 of pregnancy

  1. If you haven‘t already scheduled your first prenatal appointment, you must do so now.
  2. Continue to take your prenatal vitamins. Vitamins that contain folic acid help to lower the risk of some congenital disabilities.
  3. Continue to eat a healthy diet that includes fruits, vegetables, whole grains, lean proteins, and healthy fats.
  4. Avoid eating certain foods like unpasteurized dairy, and undercooked fish, meat, and eggs. These foods can cause foodborne illnesses. You should also avoid fish with high mercury content, raw sprouts, deli meat, and hot dogs.
  5. Use ginger in your cooking to prevent nausea and vomiting related to morning sickness. Eating ginger candy, ginger carrot soup, ginger cookies can help.
  6. Avoid drinking alcohol, excessive amounts of caffeine, smoking cigarettes, or using illegal drugs. These can harm your baby.
  7. If you have a cat, it is time to let someone else take care of the litter box. Exposure to cat litter can cause toxoplasmosis, an infection that can harm the unborn baby.
  8. If you are suffering from bloating, you must drink plenty of water and eat high fiber foods. This helps to keep things moving through your digestive system and thus prevents constipation and bloating.
  9. You should also talk to the doctor about taking the influenza vaccination to protect yourself and your baby from flu.

Final thoughts

At 5 week of pregnancy, you have already entered the second month of pregnancy. Your baby is growing at a rapid pace. Several cells and organs like the blood cells, kidney cells, nerve cells, brain, spinal cord, heart, and the gastrointestinal tract are starting to develop.

At this stage, you are also going through a whole range of symptoms like morning sickness, tender breasts, frequent urination, mood swings, craving and aversion to certain foods, and bloating. Continue to follow a healthy lifestyle and take your prenatal vitamins. Avoid eating unpasteurized dairy, and fish that contain high levels of mercury.


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