At 24 weeks-28 weeks of pregnancy, a glucose tolerance test is required. Drinking 75g of glucose and having fasting blood glucose less than 5.1mmol/L, one hour blood glucose less than 10mmol/L and two hours blood glucose less than 8.5mmol/L is the normal range. If one of them is higher than normal, it is gestational diabetes, and you should monitor your daily fasting and blood sugar after 3 meals and 2 hours, and follow the diabetic diet, and it is better to control your fasting blood sugar below 5.3mmol/l and your blood sugar after 2 hours of meals below 6.7mmol/l.