Yes, there are many signs that you have diabetes.
Here are a few that I had:
1) frequent urination
2) blurry vision
3) tingly feet
this is what webmd.Com states about the symptoms:
"being very thirsty
urinating often
feeling very hungry or tired
losing weight without trying
having sores that heal slowly
having dry, itchy skin
losing the feeling in your feet or having tingling in your feet
having blurry eyesight"
i hope this helps,
ladybrannon