Do i have sugar diabeties?

well at lunch 2day i ate a poptart and a sandwich and drank some of a yoohoo.lol but seriously thats my normal lunch and today my fingers were feeling twitchy and i couldnt hold them up without shaking them. i went on a website and have 4 out of the 5 symptoms they said.. including Weight gain, Dehydration/water need (im drinking water now), Ive been peeing alot, my vision sometimes blurs during cl (yes i go 2 school) and at gym im feeling tired to fast and faster then i usaully do. can you please help and if i do what should i do