What are the symptoms of gestational diabetes to be wary of? Gestational diabetes refers to abnormalities in glucose metabolism such as high blood sugar, insulin resistance, or insufficient insulin secretion during pregnancy. People with this disease may develop high blood sugar during pregnancy even if they don\’t have a family history of diabetes. Although gestational diabetes is less serious than other forms of diabetes, it can still pose a risk to the mother and fetus. Therefore, we need to know some common symptoms of gestational diabetes to prevent the occurrence of this disease. 1. Frequent urination and thirst. During pregnancy, the kidneys of pregnant women will be more active, but they are also prone to kidney failure.