If you are pregnant and worried about high blood sugar, you may be wondering what gestational diabetes symptoms look like and whether you would notice them yourself. The important thing to know is that gestational diabetes often causes no obvious symptoms. When symptoms do occur, they can be mild and easily confused with normal pregnancy changes.
In this guide, you will learn about the signs of gestational diabetes, its causes and risk factors, how testing works, treatment options, and how high blood sugar can affect pregnancy.
What Is Gestational Diabetes?
Gestational diabetes is a type of diabetes that develops during pregnancy in someone who did not previously have diabetes. It happens when the body cannot produce or effectively use enough insulin to keep blood glucose within a healthy range.
Insulin helps glucose move from the bloodstream into cells, where it can be used for energy. During pregnancy, hormones produced by the placenta can make the body's cells less sensitive to insulin. This is called insulin resistance.
Most pregnant women can produce enough additional insulin to compensate. In some women, however, the pancreas cannot meet the increased demand. Blood glucose then rises, leading to gestational diabetes.
Gestational Diabetes Symptoms: What to Look For
One of the biggest challenges with gestational diabetes is that there may be no noticeable warning signs.
If symptoms occur, they may include:
Possible symptom | Why it may be noticed |
Increased thirst | Higher blood glucose can contribute to increased thirst |
Frequent urination | High blood glucose can increase urination |
Tiredness | Fatigue may occur, although it is also common during pregnancy |
Nausea or feeling unwell | May occur in some people but is not specific to gestational diabetes |
Blurred vision | Can occur with high blood glucose but needs medical assessment |
Increased thirst and frequent urination are among the better-established possible symptoms. However, these symptoms alone cannot confirm gestational diabetes, because frequent urination and tiredness are also common during pregnancy.
Why Symptoms Can Be Difficult to Notice
Many pregnant women feel tired, urinate more often or experience changes in appetite and thirst. These changes do not necessarily mean blood sugar is high.
That is why screening is important even when you feel completely well. Testing is more reliable than trying to identify gestational diabetes based on symptoms.
What Causes Gestational Diabetes?
The exact reason why some women develop gestational diabetes and others do not is not completely understood.
The main factor is the increasing insulin resistance that occurs during pregnancy. Hormones from the placenta can interfere with insulin's normal action. As pregnancy progresses, the body's need for insulin increases. If insulin production cannot keep up, blood glucose can rise.
Gestational Diabetes Risk Factors
Anyone can develop gestational diabetes, including women without obvious risk factors.
However, your risk may be higher if you:
Had gestational diabetes during an earlier pregnancy.
Have a parent or sibling with diabetes.
Had prediabetes before pregnancy.
Are overweight or have obesity.
Have polycystic ovary syndrome (PCOS).
Previously delivered a baby with a high birth weight.
Have high blood pressure or certain other health risk factors.
Having a risk factor does not mean you will definitely develop gestational diabetes. Likewise, having no known risk factors does not completely rule it out.
How Is Gestational Diabetes Diagnosed?
Because gestational diabetes often has few or no symptoms, healthcare professionals use blood glucose testing to diagnose it.
For many pregnant women, screening is performed between 24 and 28 weeks of pregnancy. Women at higher risk may be tested earlier.
Glucose Challenge and Tolerance Tests
Depending on the healthcare provider and testing approach, you may have a glucose challenge test followed by an oral glucose tolerance test if the first result is higher than expected.
During these tests, you drink a measured glucose solution and have blood samples taken according to the testing protocol. The results help your healthcare professional determine whether your blood glucose is within the expected range.
Do not try to diagnose gestational diabetes using a home glucose meter alone. Your doctor or maternity care team should interpret test results using the appropriate diagnostic criteria.
Gestational Diabetes Treatment
The goal of treatment is to keep blood glucose within the range recommended by your healthcare team while supporting a healthy pregnancy.
Treatment commonly includes:
Healthy eating.
Appropriate physical activity.
Blood glucose monitoring.
Medication or insulin when needed.
Healthy Eating
A gestational diabetes diet does not mean avoiding all carbohydrates or drastically restricting food.
Instead, your healthcare professional or dietitian may recommend balanced meals with appropriate portions of carbohydrates, protein, vegetables, healthy fats and high-fibre foods.
Helpful approaches can include:
Choosing whole-grain carbohydrate sources where appropriate.
Eating plenty of non-starchy vegetables.
Including protein with meals.
Limiting sugary drinks and foods high in added sugar.
Spreading carbohydrate intake throughout the day.
Avoiding very large meals that cause significant blood glucose rises.
Carbohydrates are still an important source of energy during pregnancy, so major dietary restrictions should only be made with professional guidance.
Physical Activity
If your pregnancy care provider says exercise is safe for you, regular moderate physical activity can support blood glucose management and improve insulin sensitivity.
Your activity plan should take your pregnancy, health status and any pregnancy complications into account. Ask your doctor or midwife what type and amount of activity is appropriate for you.
Blood Glucose Monitoring
Some women with gestational diabetes are asked to check their blood glucose at home at specific times, such as before or after meals.
If your healthcare professional recommends home monitoring, a suitable blood glucose meter can help you record readings for discussion during prenatal appointments.
For example, products such as the Accu Chek Meter (Instant), EvoChek Meter Kit GM700S, and EvoCheck GO Meter Kit can be considered when a healthcare professional recommends home blood glucose monitoring.
Other options include the Medisign Blood Glucose Monitor MM800, Certeza Blood Glucose Monitor Plus, and Certeza Blood Glucose Monitor GL100.
The meter must be used with compatible test strips. For example, Accu Chek Instant Test Strips are designed for the Accu Chek Instant meter, while On Call Plus Blood Glucose Test Strips are intended for compatible On Call Plus devices.
These products do not treat gestational diabetes. They are monitoring tools and should be used according to your healthcare professional's instructions.
Medicines and Insulin
Some women can manage gestational diabetes through nutrition, activity and monitoring. Others need medication because their blood glucose remains above their treatment targets.
Insulin may be prescribed when lifestyle measures are not enough. Depending on the individual situation and local clinical practice, healthcare professionals may also consider other medicines.
Do not start, stop or change diabetes medicine during pregnancy without medical advice.
If insulin is prescribed, Mr Medicine Mart also provides an insulin range. The specific insulin, dose and timing must come from your healthcare professional.
How Gestational Diabetes Can Affect Mother and Baby
Well-managed gestational diabetes can often be successfully managed during pregnancy. However, persistently high blood glucose can increase the risk of complications.
For the mother, these may include:
High blood pressure.
Preeclampsia.
Increased likelihood of cesarean delivery.
A higher chance of gestational diabetes in a future pregnancy.
Increased future risk of type 2 diabetes.
For the baby, uncontrolled high blood glucose can increase the risk of:
Higher birth weight.
Low blood glucose after birth.
Breathing difficulties.
Premature birth.
Certain birth complications.
These risks do not mean that complications will definitely happen. Good prenatal care, appropriate blood glucose management and regular monitoring can help reduce risks.
What to Eat With Gestational Diabetes
There is no single meal plan that works for every pregnant woman with gestational diabetes.
Your calorie, carbohydrate and nutritional needs depend on factors such as your pregnancy stage, health, activity level and blood glucose pattern.
As a general approach, meals can include:
Non-starchy vegetables such as leafy greens.
Appropriate portions of whole grains or other high-fibre carbohydrates.
Protein sources such as eggs, lean meat, fish, beans or lentils.
Healthy fats in appropriate portions.
Whole fruit rather than sugary drinks or fruit juice.
It is usually better to manage carbohydrate portions than to eliminate carbohydrates completely. A dietitian can create an individualized plan based on your needs and glucose readings.
What Happens After Delivery?
Gestational diabetes often improves after childbirth because the pregnancy-related hormonal changes that contributed to insulin resistance decrease.
However, having gestational diabetes increases your future risk of developing type 2 diabetes. ACOG notes that some women diagnosed during pregnancy may also have had previously unrecognized diabetes, so follow-up testing is important.
MedlinePlus reports that women who had gestational diabetes should be tested for diabetes 4 to 12 weeks after giving birth, with continued testing every 1 to 3 years if the results are normal. Your healthcare professional can advise you on the appropriate follow-up schedule.
When Should You Talk to a Doctor?
Contact your pregnancy care provider if you are concerned about possible gestational diabetes symptoms, especially if you notice unusual thirst, frequent urination, blurred vision or other concerning changes.
More importantly, attend your scheduled prenatal appointments and recommended glucose screening even if you feel completely normal.
If you have already been diagnosed with gestational diabetes, follow your blood glucose monitoring, diet, activity and medication plan carefully. Seek medical advice if your readings repeatedly fall outside the targets given to you.
Conclusion
Understanding gestational diabetes symptoms is useful, but symptoms alone are not a reliable way to identify the condition. Many women have no noticeable symptoms, which is why routine pregnancy screening is so important.
Gestational diabetes develops when pregnancy-related insulin resistance causes blood glucose to rise. With appropriate nutrition, physical activity, blood glucose monitoring and medication or insulin when necessary, it can be managed under professional care.
If you are pregnant and concerned about your blood sugar, speak with your doctor rather than trying to diagnose or treat the condition yourself. Early testing, consistent prenatal care and following your personalized treatment plan can help protect both you and your baby.
If your healthcare professional has recommended home blood glucose monitoring, explore at Mr Medicine Mart and choose a compatible device according to your healthcare team's advice.
Frequently Asked Questions
1. What are the main gestational diabetes symptoms?
Gestational diabetes often causes no obvious symptoms. Possible symptoms include increased thirst and frequent urination, but these can also occur during normal pregnancy. Testing is needed for diagnosis.
2. When is gestational diabetes usually tested?
Many pregnant women are screened between 24 and 28 weeks of pregnancy. Those at higher risk may be tested earlier.
3. Does gestational diabetes go away after pregnancy?
Gestational diabetes often resolves after delivery, but women who have had it have a higher future risk of type 2 diabetes. Postpartum glucose testing and ongoing follow-up are important.