you need frequent antenatal supervision with periodic check up of fasting glucose
level which should be below 95 mg%.
diet modification, exercise needed to control diabetes
may be needed if fasting glucose level is above 105mg/dl even after diet restiction.
if you control your sugar level with diet then there will be no need for insulin.
be under the guidance of a gynecologist.
if all things go fine you can deliver without any problem.