Why Does Urine Color Change to Yellowish During Pregnancy?

Most common reasons of urine color change to yellowish during pregnancy is usually a sign of dehydration and increased levels of the hormone progesterone.

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Pregnancy is a period of immense physiological changes as the body adapts to nurture and accommodate new life. Among these changes, one that often raises concern is the shift in urine color, specifically to a more pronounced yellowish hue.

Pregnant women may observe a deepening of the yellow color in their urine, commonly accompanied many pregnant women by a strong odor and changes in its frequency.

However, urine during pregnancy is typically not of concern unless accompanied by other symptoms, such as pain or burning during urination. In this article, we will discuss the reasons why urine color may change to a yellowish during pregnancy and when it is necessary to seek medical advice.

What Does the Urine Color Mean?

The color of urine can be a significant indicator of our overall health and hydration status. It’s a direct reflection of what’s happening inside our bodies, providing clues about various physiological processes and potential health issues. During pregnancy, hormonal changes and red blood cells breakdown are among the leading causes of urine color shifts.

Normal Urine Color:

  • Pale Yellow to Gold: This is the normal color of healthy urine. It’s due to a pigment called urochrome produced when your body breaks down hemoglobin.
  • Transparent or Clear: This indicates that you have been drinking a lot of water and are well-hydrated.
  • Dark Yellow or Amber: This suggests that you might not be drinking enough water. Darker urine is more concentrated, indicating a higher level of waste products relative to fluids.
  • Other Colors: Sometimes, certain foods, medications, or health conditions can cause urine to turn colors like red, green, blue, dark brown, or cloudy white. If these colors persist, it’s important to consult a healthcare professional.

Pregnancy Urine Color:

  • Bright Yellow: During pregnancy, many women notice their urine turning a brighter yellow. This is often due to the intake of prenatal vitamins, specifically B vitamins, which can cause urine to become more vibrant.
  • Dark Yellow or Amber: This could indicate dehydration, a common issue during pregnancy. Expectant mothers need more water than usual, and failing to meet this need can result in dark yellow urine.
  • Orange or Dark Orange: This could be due to certain medications or dehydration. However, it could also indicate a liver or bile duct condition and should be evaluated by a healthcare provider.
  • Cloudy or Murky: This might suggest a urinary tract infection (UTI), which is relatively common during pregnancy. If accompanied by other symptoms like pain, burning, or frequent urination, it’s crucial to seek medical attention.

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Why Urine Become Yellowish During Pregnancy?

During pregnancy, many physiological changes occur in a woman’s body, including changes in urine color. This can range from light yellow to bright yellow or even dark yellow. A multitude of factors can cause this change in urine colour, including:

  • Increased Concentration of Urochrome: The yellow color in urine is primarily due to a pigment called urochrome, which is produced when your body breaks down hemoglobin from old red blood cells. During pregnancy, this pigment can be more concentrated, leading to darker shade.
  • Human Chorionic Gonadotropin (hCG): The presence of hCG, a hormone produced during pregnancy, can also affect the color of urine. Higher levels of this hormone can lead to a more yellowish hue in the urine.
  • Dehydration: Pregnant women need more water than usual to support the growing baby and increase blood volume. If they don’t consume enough fluids, their bodies may become dehydrated, leading to darker, more concentrated urine.
  • Prenatal Vitamins: These essential supplements are rich in B vitamins, which can turn urine a brighter shade of yellow.
  • Urinary Tract Infections (UTIs): UTIs can cause urine to appear cloudy or murky. If left untreated, these infections can spread to the kidneys, causing the urine to turn dark brown.
  • Kidney Stones: Pregnancy urine color changes can also be a sign of kidney disease, which is more common during this time due to hormonal and physical changes in the body.
  • Infections in the Urinary Bladder: Conditions like cystitis can lead to change in urine color. These infections can cause the urine to appear cloudy or have an unusual smell.

However, for maternal and fetal health, it’s essential to monitor urine color during pregnancy and seek medical attention if any concerning changes occur. Also, remember if you have gestational diabetes, you may need to take regular urine tests to ensure your blood sugar levels remain under control.

Is It Normal for Urine Color to Change in Early Pregnancy?

Yes, it is normal for urine color to change in early pregnancy. The shift in urine color can primarily be attributed to hormonal changes and increased blood flow to the kidneys during pregnancy.

For instance, an increase in the hormone human chorionic gonadotropin (hCG) can impact urine color. During pregnancy, changes in your urine color can tell you about your underlying health condition; it might be a concern if your color changes to:

  • Pink or red urine: This may be an indication of blood in the urine. It can be due to a variety of reasons, such as urinary tract infections, kidney stones, or other serious conditions.
  • Orange or brown urine: This may indicate dehydration, liver problems, or even jaundice.
  • Foamy urine: This can be caused by protein in the urine and may be a sign of preeclampsia, a potentially life-threatening condition during pregnancy.
  • Dark brown or black urine: This could signal liver problems or potential bleeding in the urinary tract.
  • Dark Yellow urine: This color is usually harmless but, if accompanied by other symptoms, may indicate dehydration or a UTI.

However, urine test strips are available to check for abnormalities in the colour change the urine. These can be easily done at home and can provide insight into potential health concerns. If any other symptoms accompany your pregnancy urine color change, it’s crucial to consult a healthcare provider and get a proper urine pregnancy test done.

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How to Identify Changes in Urine Color During Pregnancy?

Identifying changes in urine color during pregnancy can help determine whether it’s a regular part of the pregnancy process or something that needs to be discussed with your healthcare provider. Some tips for identifying changes in urine color include:

  • Observe the Color: Normal urine color ranges from pale yellow to deep amber due to a pigment called urochrome. During pregnancy, it might become slightly darker due to increased levels of certain hormones, such as human chorionic gonadotropin (hCG).
  • Stay Hydrated: Dehydration can darken urine color. If you’re drinking enough fluids and your urine is still dark, it’s best to consult with your healthcare provider.
  • Monitor Frequency: Increased frequency of urination is common in pregnancy due to hormonal changes and pressure on the bladder. If you notice a sudden increase in frequency, urgency, or changes in color, it could indicate a urinary tract infection.
  • Note Other Changes: Changes in urine production aren’t limited to color. You should also note changes in smell or consistency. A strong smell or cloudy appearance could also indicate a urinary tract infection.
  • Look for Additional Symptoms: If changes in urine color are accompanied by other symptoms like pain, burning sensation during urination, fever, abdominal pain, or nausea, it could be a sign of a medical condition such as a kidney stone or urinary tract infection.
  • Get Regular Checkups: Regular prenatal checkups are essential for monitoring your overall health during pregnancy. Your healthcare provider will check your urine for any abnormalities and address any concerns you may have.

How to Maintain Healthy Urine Color During Pregnancy?

Maintaining a healthy urine color during pregnancy is an important part of prenatal care. Here are several tips to ensure your urine stays within the normal range:

  • Avoid Dehydration: Drink plenty of water to keep urine a healthy pale yellow color.
  • Monitor Urine Color: Regularly check for changes in your urine color.
  • Healthy Diet: Consume a balanced diet rich in fruits and vegetables.
  • Medications and Supplements: Consult with your healthcare provider about the effects of medications and supplements on urine color.
  • Consult Healthcare Provider: Seek medical advice if you notice consistent dark, cloudy, or unusually smelling urine.
  • Regular Exercise: Maintain good overall health through regular physical activity.
  • Limit Certain Foods and Drinks: Reduce intake of foods and drinks that can change urine color, like beetroot and blackberries.
  • Urinate Frequently: Frequent urination can help remove bacteria and prevent the development of Urinary tract infections.
  • Regular urine testing: Regular urine analysis can help detect any potential underlying kidney diseases and other health issues.
  • Maintain a healthy lifestyle: Getting enough rest, practicing good hygiene, and managing stress levels can all contribute to maintaining a healthy urine color during pregnancy.

When to Seek Medical Help?

As mentioned earlier, changes in urine color during pregnancy can be perfectly considered normal, and attributed to various factors. However, if you experience any of the following symptoms alongside urine color changes, it’s essential to consult a healthcare professional:

  • Pain or burning sensation while urinating
  • Frequent urge to urinate but only passing small amounts
  • Difficulty urinating or unable to empty bladder completely
  • Blood in urine
  • High blood pressure
  • Nausea, vomiting, or fever
  • Lower back pain
  • Swelling in the face or hands
  • Vaginal bleeding or spotting
  • Decreased fetal movement

Furthermore, appropriate treatment for underlying medical conditions, such as UTIs or liver issues, is essential during pregnancy to avoid potential complications. It’s crucial to communicate any changes in urine color with your healthcare provider and attend regular prenatal appointments.

What types of urine tests can be taken during pregnancy?

During pregnancy, routine urine tests are a crucial aspect of prenatal care and can provide valuable information about the health of both the mother and baby. These tests may include:

  • Urinalysis: This is a standard test that checks for various substances in the urine, such as glucose, protein, red blood cells, white blood cells, and bacteria.
  • Urine Culture: This test checks for any bacteria in the urine that could cause a UTI. It is usually performed if there are symptoms of a possible infection.
  • Glucose Screening Test: This test checks for gestational diabetes, a condition where blood sugar levels become elevated during pregnancy.
  • Group B Strep (GBS) Test: If your urine color typically changes to yellowish or orange, your doctor may also recommend a Group B Strep test. This is a routine screening for bacteria passed from mother to baby during birth, which can cause complications.
  • Urine drug testing: If there is a concern about drug use during pregnancy, urine tests can be performed to detect the presence of drugs or alcohol.


What are the normal colors of urine?

Normal urine color ranges from pale yellow to deep amber due to a pigment called urochrome. Variations in color can result from hydration levels, diet, medications, and certain health conditions. Always consult a doctor for persistent unusual colors.

What does early pregnancy urine colour look like?

In early pregnancy, urine can be a darker shade of yellow. This is primarily due to increased levels of the hormone hCG, and higher concentration of urine due to increased fluid intake and frequent urination. However, color can vary widely among individuals.

What is the importance of urine throughout pregnancy?

Urine tests during pregnancy help monitor the mother's health and detect potential pregnancy complications. They can signify gestational diabetes, preeclampsia, dehydration, and urinary tract infections, enabling early intervention and promoting both maternal and fetal well-being.

Which Colour of urine is good during pregnancy?

A healthy urine color during pregnancy is a pale yellow or clear. This indicates proper hydration and normal function. Dark yellow, amber, or brown urine can suggest dehydration. Pink or red urine could indicate blood, warranting immediate medical attention.

Is it normal for a pregnant woman urine to be yellow?

Yes, it's normal for a pregnant woman's urine to be yellow. This is often due to higher levels of certain hormones and vitamins. However, very dark yellow or orange urine could indicate dehydration, which should be addressed promptly.

Why is my urine yellow and smelly during pregnancy?

Yellow and smelly urine during pregnancy could be due to dehydration, dietary changes, hormonal shifts, or bacterial infections. An unusual ammonia-like smell could indicate changes in urine due to lifestyle factors. If persistent, it may signal a urinary tract infection or proteinuria.


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  3. Abnormal Urine color changes
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