Thanks for your query.Based on the facts that you have posted it appears that you have what is called as Diabetic Nephropathy
Your serum creatinine
levels seem to be fluctuating .This is mostly due to improper conroll of Diabetes
Please monitor your sugar and creatinine levels frequently and consult your Nephrologist
on regular basis for change in dosage of medications to keep both under control.
This is the only way to prevent further damage to your kidneys.