hello Tina,
there are no fixed symptoms
diabetes, in fact most common presentation is no symptoms, they are just diagnosed by chance. however, most present with repeated infections like
boils, some may come with loss of weight, easy fatigablity, some time with complications like heart problem,
kidney problem, nerves problem.
however, since your blood
glucose is normal, need not worry about it.
but, since you have strong family history, it is highly advisable to take preventive steps like high physical activity like sports/brisk walk/running for at least 30 minutes a day, for 5 days a week and eat healthy most of time like fruits and vegetables, rather than creams, pizza etc. i would also like to know your age for further answer.
prevention is better than cure, but in this case it is the only cure.
take care.