JG,
I am a nurse and I am wondering since you had protein in your urine intermittingly and not all the times you tested if it could be your diet? Do you eat a very high protein low carbohydrate diet? Also you could be what is called "pre - diabetic". If so, the Dr. will put you on a new diet to control your insulin levels and may suggest you loose some wieght if needed.
Here are some other signs that "could" suggest a closer look at your kidneys, 1. low urine output 2. too much urine output 3. dark or strange odor in urine 4. excessive thirst 5. extreme fatigue 6. pain in your kidneys
Ask yourself honestly if you have any of these symptons. Also its good that you are getting this checked which can head off problems in the future. You may have just the beginning of something and need to be watched. Or, you may have nothing at all. I know for myself, sometimes they find some blood in my urine but the other tests always come back fine. We have kidney problems in my family too.
Try not to worry too much because you may be worrying for nothing at all. You can't do anything about it even if there is a problem until you get all the tests back anyway. I know its hard. I'll be sending positive thoughts your way, please let me know how you make out. And pm me anytime if you need someone to "talk" to with a medical background. Peace, Lilly