Type 1 diabetic, lately have been feeling dizzy, headache, and cold tips of fingers. could this be a circulation or kidney problem?

Diabetic problems: As a type 1 diabetic, you certainly can have kidney disease. To find out, see a physician and collect a 24 hour urine for creatinine clearance and protein along with some blood work done and the answer to your kidneys' function will be easy to determine. As far as your fingers go, diabetics can have peripheral artery disease which affects their legs. See your physician about your finger problems.