However, they may test much earlier if there is any suspicion that a woman may have diabetes
If diagnosed with GD, then there is blood sugar
monitoring usually at least 3 - 4 times a day. Fasting and then 2 hours after every meals. IF the GD is severe it may be more frequent. If diet and exercise don't work then the woman is usually started on insulin.
If someone already has diabetes, then their diabetes will get worse during pregnancy. Very stringent control is required.