Hi.. These are also the symptoms of diabetes mellitus. The best way to clarify your doubts is by testing your blood for presence of high blood sugars. You can do a fasting and post prandial blood sugars. If the values are in the normal limits ( between 90 to120mg/dl fasting and 110 to 140mg/dl post prandial blood sugars), you do nor have diabetes.. So why don't you get the test done instead of pondering over it....