Everyone is different and symptoms vary. I experienced great hunger after eating afull meal. Blurry vision sometimes when sugar is high. Running to the bathroom during the night or day. Great thirst which I never had yet. When eating high carbs, generally falling asleep after. Sweating, feeling woozy when sugar is falling when you don't eat, or getting sick to your stomach.
Just go get a blood test and check it out now. The sooner you know the sooner you can stop worrying and start acting on the problem ( if there is one).