EATING SWEETS AND HIGH BLOOD SUGAR

hi, just one of my concerns..i'm 26yrs.old. My OB didnt ask me to do the blood sugar test.. my glucose result in my urine is negative(it was taken when I was in my 3rd month).. then, i used to eat lots of sweets and mangoes during my second trimester. is it bad o is there any possiblties that I will have high blood sugar? please help