High blood sugar and frequent urination at night

Patient: Dear DoctorI had diabetis type 2 since 2009. I have been taking metformin 850 mg two to three pills. Recently, I have had frequent urination at night, inspite of reduced sugar intake and strict diet. I have controlled cholesterol and hypertension by taking lipetor 20 mg and olmetec 40 mg. My blood sugar is 100-120.