Re: thirsty alot and urinating alot
The symptoms you describe could be from diabetes, but they could also be from the hot, humid weather we've been having lately.
The best way to check this out is to either go to your doctor and have an A1c and a fasting blood glucose test done, or you could borrow a meter from someone and test your own blood sugar levels. If you get two fasting tests of 100-125, then you're in the range called "impaired glucose tolerance" or "insulin resistance" (they mean the same thing). If you get two fastings of 126 or more, then you're diabetic. If you get any non-fasting readings of over 160, then you're probably diabetic or insulin resistant.
For now, I would immediately stop drinking regular soda, which has a TON of sugar in it. The tomato juice isn't bad if you don't drink too much of it. Stick with diet soda and water until you know for sure whether or not you're diabetic.