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“Signs of gestational diabetes in third trimester” Learn about symptoms, risks, tests, costs, mistakes and things to do in easy Bangla with 2026-2027 updates for the safety of mother and baby.

Slug: signs-of-gestational-diabetes-third-trimester

The body undergoes many changes during the last three months of pregnancy. Many people ignore symptoms such as excessive thirst, frequent urination, and excessive fatigue as normal pregnancy symptoms.

There are some symptoms that, if present, should be checked to see if there is a possibility of gestational diabetes.This guide discusses signs of gestational diabetes in third trimester in simple terms, so that a mother can be alerted in time.

There is no need to be afraid of gestational diabetes, but it is not right to ignore it either. According to the CDC, it usually appears around the 24th week of pregnancy and many times there are no obvious symptoms; therefore, it is important to get tested between 24 and 28 weeks.

What is it? 

If a mother’s blood sugar levels rise above normal during pregnancy and are first detected during pregnancy, it is called gestational diabetes. Even if you don’t have diabetes before, pregnancy hormones can sometimes make your body unable to use insulin properly, causing blood sugar or glucose to rise.

According to the NIDDK, gestational diabetes can only occur during pregnancy and can cause health problems for both mother and baby; however, if managed properly, the risk can be greatly reduced. The baby’s growth is rapid in the third trimester, so it’s even more important to keep your blood sugar under control during this time.

How does gestational diabetes occur? 

As the baby grows during pregnancy, hormonal changes occur in the mother’s body, and these changes can sometimes affect blood sugar control.These changes help the baby grow and maintain the pregnancy, but sometimes they can also affect the mother’s blood sugar control. But these hormones can reduce the body’s ability to use insulin. Hormonal changes during pregnancy can increase the body’s need for insulin. Some mothers’ bodies can handle the extra demand, but some cannot produce enough insulin. This causes blood sugar levels to rise and puts them at risk for gestational diabetes.

The Mayo Clinic says that changes in hormone levels during pregnancy can make it difficult for the body to use glucose, and blood sugar can rise. This is why not only overeating, but also the normal hormone changes of pregnancy are associated with gestational diabetes.

What symptoms can be seen in the third trimester? 

Even if you have gestational diabetes in the last three months of pregnancy, the symptoms are often not very clear, so it’s difficult to be sure just by looking at the changes in your body.Many of the symptoms look like normal pregnancy symptoms.

 So if any of the symptoms seem excessive or unusual, it is safest to talk to your doctor, midwife or healthcare provider before making a decision on your own.

• If you feel thirsty again and again even after drinking water, it is not a good idea to ignore it as a common pregnancy symptom.
• A sudden increase in the amount of urine or a tendency to go to the bathroom frequently can also be a sign to watch out for.
• If you feel weak even after getting enough rest or feel tired even after doing little, it is a good idea to inform your doctor.
• If you experience blurred vision, sudden changes in vision, or difficulty seeing clearly for some time, you should seek medical advice immediately.
• Having recurrent urinary tract infections or yeast infections.
• Feeling very weak or uncomfortable even after eating.
• Suspecting baby movement, body swelling, dizziness, or any other unusual changes.

Both the CDC and NIDDK say that gestational diabetes can often be asymptomatic or have mild symptoms, such as excessive thirst or urination. So whether you have symptoms or not, getting tested is the best way to be sure.

When to Pay Attention to Symptoms

Fatigue, frequent urination, or trouble sleeping are not uncommon during pregnancy. But if these symptoms increase suddenly, interfere with daily activities, or have never happened before, then it is important to pay attention to the matter.

It is not right to delay if symptoms such as excessive thirst, blurred vision, infection, dizziness or decreased baby movement appear at the end of pregnancy. If you have these symptoms, it is better to tell the doctor, because if you have gestational diabetes, you need to follow-up the mother’s sugar level and the baby’s health more carefully in the last three months.

Who is at higher risk and what will you need?

Any mother’s blood sugar can increase during pregnancy, but some mothers are at higher risk. Doctors usually advise you to be extra careful if you have had gestational diabetes before, have a family history of diabetes, were overweight before pregnancy, or have PCOS.

The risk may increase if you have had gestational diabetes before, have a family history of type 2 diabetes, were overweight before pregnancy, have PCOS, or had a high birth weight of a previous baby.

The Mayo Clinic lists risk factors as overweight, lack of physical activity, prediabetes, gestational diabetes in a previous pregnancy, PCOS, diabetes in a parent or sibling, and having a baby weighing more than 9 pounds or 4.1 kg. Therefore, if you have risk factors, it is best to inform your doctor from the beginning of your pregnancy.

Who should be more careful? 

Diabetes during pregnancy can happen to any pregnant mother, but some people are at a higher risk. For example, if you have had gestational diabetes before, it is considered a risk factor or if someone in your family has had diabetes, if you were overweight before pregnancy or have PCOS, the doctor usually tells you to be more careful. So, it is safest to confirm it through a blood test rather than just judging by the symptoms.

Pregnancy care is becoming more screening-focused in 2026–2027. The ADA’s 2026 Standards of Care have updated clinical recommendations for diabetes care, and the ADA says their Standards of Care are updated every year. Therefore, when planning a follow-up or treatment plan in 2027, you should follow the latest guidelines from your local doctor.

What to prepare before the test

A gestational diabetes test usually does not require very complicated paperwork. However, it is helpful to have a pregnancy record, previous blood sugar report, ultrasound report, medicine list, and doctor’s prescription with you. In many countries, an appointment or insurance information may be required, so it is better to find out the rules from the hospital or lab before taking the test.

What to do when you get the report

If the report is normal, you should continue with routine prenatal care. But if the report is abnormal, you should not panic and go to the doctor. Sometimes, if the first screening test is abnormal, an Oral Glucose Tolerance Test or OGTT is asked to be done to confirm. The Mayo Clinic says that if the sugar in the initial glucose challenge test is high, a follow-up glucose tolerance test may be done.

Step-by-step testing and what to do

The safest way to understand gestational diabetes is to get screened on time. According to ACOG, all pregnant women should get screened for gestational diabetes; if there are risk factors, the test can be done in early pregnancy, and if there is no risk, blood sugar is usually measured at 24 to 28 weeks.

First, during a prenatal checkup, the doctor may ask about your health history, family history, and previous pregnancy record. Then, a glucose screening test or OGTT may be given. If gestational diabetes is detected, a meal plan, physical activity, home blood sugar monitoring, and if necessary, medicine or insulin are planned.

Discover more here: Urine Leakage During Pregnancy Second Trimester

Test timing according to 2026–2027

A blood sugar test is usually done between 24 and 28 weeks to check for gestational diabetes. However, if a mother has had gestational diabetes before, is overweight, or has a family history of diabetes, her doctor may recommend testing earlier. So, even if you don’t have symptoms, it’s important to have regular prenatal checkups during this time.

The final guidelines for 2027 may not be published everywhere yet, as diabetes guidelines are usually updated regularly. So it’s good to understand the current guidance for 2026, but it’s safest to plan your testing based on the updated advice for 2027 from your country, hospital, and doctor.

Potential costs and time

The exact cost of a gestational diabetes test varies from place to place. The cost depends on the country you are testing in, whether you are going to a public or private hospital, and whether you have insurance. In the United States, if you have health insurance, you often don’t have to pay the full cost of a screening test for gestational diabetes out of pocket.

 In some cases, insurance covers the entire cost, while in other cases, a portion of the cost is covered.However, the cost can vary depending on the insurance plan, hospital or lab, and billing system.

In countries with public healthcare systems like Europe or the United Kingdom, gestational diabetes testing is often done as part of routine pregnancy care. However, if someone gets tested at a private hospital or lab, there may be a separate cost. So it is best to check with your hospital, clinic, or insurance provider before getting tested.

According to the Mayo Clinic’s diagnostic information, if the initial glucose challenge test results are high, a follow-up glucose tolerance test may be done, where blood sugar is measured several times. So it’s important to keep in mind not only the test fee, but also the time, follow-up visits, and monitoring costs.

Cost, common mistakes

Managing gestational diabetes does not just mean reducing sugar; balancing it while maintaining the safety of the mother and baby. According to the ADA’s pregnancy management guidance, diabetes in pregnancy care may include nutrition, lifestyle, physical activity, and if necessary, medicine or insulin. Therefore, reducing your diet on your own or taking medicine after looking at online advice can be dangerous.

Mayo Clinic says that if gestational diabetes is not controlled, the baby’s high birth weight, early birth, newborn low blood sugar and the mother’s high blood pressure, preeclampsia and C-section risk may increase. However, with timely diagnosis and care, many mothers can continue a healthy pregnancy.

Common mistakes and safe decisions

The most common mistake is to completely ignore the symptoms. Another mistake is to completely stop rice, bread, fruit or carbohydrates because of fear at the slightest symptom. Pregnancy requires nutrition, so do not reduce food; rather, the amount, time and quality of food should be adjusted according to the advice of a doctor or dietitian.

Another mistake is to ignore all subsequent symptoms even if the test is normal. You should also tell your doctor if you notice any new changes in your body. Follow-up after delivery is also important, as the CDC says that about half of women who have gestational diabetes will later develop type 2 diabetes.

FAQ

Can gestational diabetes be detected first in the third trimester?

Yes, it can be detected. Many people get screened at 24-28 weeks, but symptoms may be more noticeable in the third trimester. However, tests are needed to confirm the diagnosis.

Should I be worried immediately if I have signs of gestational diabetes in the third trimester?

There is no need to be worried, but it cannot be ignored. If I have excessive thirst, excessive urination, blurred vision, or unusual fatigue, I should talk to my doctor.

Is it necessary to get tested even if I have no symptoms?

Yes. Because gestational diabetes can often be asymptomatic. Both the CDC and ACOG emphasize the importance of screening at 24-28 weeks.

Is normal delivery possible with gestational diabetes?

In many cases, it is possible. However, the doctor plans the delivery by looking at the baby’s size, mother’s sugar control, blood pressure, and overall pregnancy condition.

Is diet alone enough to treat gestational diabetes?

In many cases, a healthy meal plan and physical activity may be enough. But some people may need medicine or insulin to keep their blood sugar in the target range. NIDDK says that insulin may be needed if healthy eating and activity are not enough.

Does gestational diabetes go away after delivery?

In many cases, sugar is normal after delivery, but the risk of type 2 diabetes increases in the future. Therefore, postpartum follow-up is essential.

Conclusion

Gestational diabetes is one of the issues of pregnancy that should not be taken lightly. Especially in the last three months, the baby grows rapidly, so it is very important to keep the mother’s blood sugar under control. If the blood sugar is high, some risks may arise for the mother and the baby, but many problems can be avoided if you take timely tests and take proper care. Therefore, knowing about the signs of gestational diabetes in third trimester does not mean being afraid; rather, understanding the changes in your body and making the right decisions in time.

Excessive thirst, frequent urination, excessive weakness, blurred vision or repeated infections during pregnancy should not be ignored as common problems. If such symptoms appear, it is safer to consult a doctor instead of starting a diagnosis or treatment yourself. Regular prenatal checkups, timely glucose screening and following the pregnancy care plan given by the doctor can keep the health of the mother and the baby much safer.