There are 2 important issues concerning diabetes at pregnancy.
The very first is about the diabetic who would like to conceive and look after the health of the baby to from pregnancy to delivery which we call it : pre-existing diabetes, So it's important all future moms who had diabetes, strictly control her blood glucose levels, which is most important at the first months of being pregnant. The risks of significant birth defects are greater without control of diabetes. Also it is implied to be an essential cause of losing the unborn babies.