What are the Symptoms?
There are very few signs and symptoms of gestational diabetes; however, they tend to mimic traditional diabetes mellitus. This includes increased thirst (polydipsia) and increased urination (polyuria). 
Most women do not know that they have gestational diabetes until diagnosed after an oral glucose tolerance test. An oral glucose tolerance test is performed in order to determine how well your body responds to high levels of glucose consumption over a two-hour period.
How Is Gestational Diabetes Treated?
For some, gestational diabetes can go away on its own and have no complications for the baby. However, for some, if left untreated, gestational diabetes can lead to premature birth and other health complications. Luckily, gestational diabetes is easily treatable with changes in diet and activity level. The key focus is to improve blood glucose levels by limiting the consumption of high-carbohydrate foods.
Keto and Gestational Diabetes: Can a Ketogenic Diet Help?
One key way to improve blood glucose regulation is to reduce carbohydrates consumed. By reducing carbohydrates consumed, insulin sensitivity is improved, and blood glucose regulation is improved. One clinical study found that reducing carbohydrate consumption may improve blood glucose regulation, without increasing the risk of ketonemia (abnormal blood ketone levels). 
Research has shown that the ketogenic diet can be tremendously helpful in improving type 2 diabetes, as well as improving insulin sensitivity. Because of this, it might prove beneficial for individuals suffering from gestational diabetes.  
If you have been diagnosed with gestational diabetes, consider talking to your doctor about following a low-carbohydrate or ketogenic diet. Reducing carb intake may help regulate blood glucose levels and improve symptoms of GDM.