Please take this conversation up with your doctor before you attempt to get pregnant. Although you say you have diabetes you haven't said what type or if you have stabilized your blood sugar and all of those other important facts one needs to know in order to form an informed opinion.

Could diabetes affect... yes by all means it can. Will it I do not know. You are not my patient, I do not have your history I do not know the details of your condition at this date. Again consult your doctor who can better inform you of YOUR risks and chances than anyone here.