[Phantom240]

So I'm 19 years old, male, and weigh about 270lbs (yeah, im a fatty lol). My grandfather on my dad's side of the family had diabetes.

Lately I've been having really bad crashes at work, to the point where I feel I'm about to pass out. It really didn't bother me, as I thought it was just my blood sugar getting low, seeing as I didn't eat much at work most of the time because I work from 10am to 9pm, and don't eat breakfast. What really scared me was this last friday, I was hanging with my friends and we were about to go have an airsoft war late at night because we all work in the daytime, so I got pumped up on sugary stuff. About an hour after that (yeah, I know it could have been a sugar crash), I began to cramp up really bad, loose my coordination, get dizzy, disoriented, and almost nauseated to the point where I had to have a friend bring me home because in my confusion I lost my key, and the ability to drive... It was like I was really drunk. That didn't bother me much, as I attributed it to a sugar crash. That sunday when I worked, I worked from 12pm to 6pm (mall hours) and so I brought my lunch, which consisted of 2 pb&j sandwiches (carbs and sugars), a small bag of cheetos (carbs and sugars again), and a 16oz can of my favorite energy drink, Rockstar. I like Rockstar, because I found it kept me awake better till the end of the workday. Well about an hour (again) after eating, I started once again feeling really lethargic, disoriented, etc. to the point where I couldn't work the computer or even a calculator. Once again I left my car, and had a friend pick me up.

So I started worrying and asked my parents what they thought of it and suggested that I may be developing Type II Diabetes due to my weight, lifestyle, and genetic history.

So for the last two days (Monday and today) I went on an experimental diet, cutting out as many carbs and sugars as possible.

The result: I feel great. This is a good thing and a bad thing. Its good that I'm cutting out things that keep my weight high, but also bad in that it may indicate that I may possibly be developing diabetes.

What does everyone think about this? Should I be worried that it may be diabetes and see a doctor, or is it just my body telling me I need to diet now that I'm out of high school?

EDIT: Also, this has been happening during the school year as well. And since I've noticed some of these symptoms (about a year now) I've also noticed that I sleep MUCH more than I used to.

I also have some of the other symptoms commonly associated with diabetes such as:
-->Excessive thirst
-->Excessive urination
-->Excessive hunger
-->Fatigue
-->Blurred vision (at times)
-->Frequent respiratory infections, and some finger and toe infections sometimes after I cut them.