is a known cause of pre term labours, malformations in the foetus and in causing various infections.
i would advise you to consult a physician and get your self treated to keep the sugars in the normal range. also get hba1c
levels done which will tell you your sugar status for the 3 months.
plan your pregnancy
only once your sugars are normal.
get a pap smear
eat balanced diet and get the infections treated too...but most important is your blood sugar levels.
i hope i have answered your query.