Gestational (Pregnancy) Diabetes Mellitus (GDM) is a type of 'temporary diabetes' in which pregnant women have high blood sugar (glucose) level. The incidence of GDM has been reported to be 2% to 4% and this may be even higher among Indian women. Symptoms of gestational diabetes include excessive thirst, tiredness and increased urination and at times, it can be easily missed till a complication takes place. All women who are pregnant should get tested to rule out the possibility of diabetes. Once this condition is diagnosed remember that the chances of getting gestational diabetes in the next pregnancy is almost 40% and the risk of developing type II diabetes increases to 50% within the next 20 years. The Gestational Diabetes Mellitus (GDM) calculator requires you to undertake a lab blood test called the 'Oral Glucose Tolerance Test'. And once you have the fasting glucose level and a value 2 hours after taking 75 gm of glucose, please enter the values into the calculator to know your risk of having Gestational (Pregnancy) Diabetes.This Calculator is based on the guidelines provided by World Health Organization.