My gtt test results are . 86 fasting.

2 hours post drinking 75 g glucose is 128. My doc says im pre diabetic. Is this just to be extra careful.on otherside i feel i cannot enjoy my pregnancy due to restrictions on food.While i know my limits but not indulging into even a little bit of icecream makes me very sad. Are these restrictions necessary looking at my reports ?.Would love to hear from the doctors here.Thanks !