Unless I misunderstand you, your creatinine level seems to indicate no kidney damage right now.
Many things can explain a slightly elevated microalbumin level such as yours. Your microalbumin level is not very high and could be caused by something as simple as the last meals you took, or not enough drinking. So I would not fret at this time.
I am not quite sure how much water you drink every day. For sure, as a diabetic you need to be walking around with a water bottle in your hand:-) That's what I tell my son once a week. In terms of preventive habits, that is the first thing I would do. I hear of some diabetic nephrologists requiring their patients to drink 3/4 gal water per day, pre-measured at the beginning of the day - possibly you should look into this?
But, whatever else you do, if you are worried at all, the first thing I'd do is to go see a nephrologist. This way, you can get some follow-up over the next 6 months, see what sustained microalbumin levels you have (my understanding is that you need to look at numbers over a period of time), and get a professional to evaluate the problem. From where I stand, it may be nothing - touch on wood! However, as Ronald Reagan used to say, "Trust but verify"!