Welcome to HCM
Yes Gestational Diabetes
is challenge to treat but as you are already diabetic and taking Metformin
Blood sugar level may become high due to steress of Pregnancy
Although it is not absolutely necessary to shift to Insulin
but Few drugs like Metformin and Glyburide
are considered relatively safe.
But if your blood sugar level is high then short acting insulin may be given before major meals.
As tight blood glucose
control is required during pregnancy for good result.
If your Pregnancy test comes positive please contact your Physician/Endocrinologist
Take care of your diet and exercise also to keep blood sugar to optimum level.