What is wrong with me?

Hi, I am a sixteen year old girl, 5'4 and weigh in the high 90's.  I am unsure about what I have, but I can tell you that when I tested my blood sugar, after fasting (14 hours), it was about 124, but then I realized the test strips were expired. I went to the doctor and the found a high amount of protein in my urine, and also ketones, but no sugar in. (I was tested about two hours after a large meal too, so the ketones were not out of starvation, and I do not exercise.) They have always seen protein in my urine also. At times though, I can tell my blood sugar goes down a lot, because I get very shaky, and at other times when my blood sugar is not low, I sometime black out for a second, get very dizzy, and faint.  I am not sure what to think any more. Any help would be great!

P.S: We just found out I am also lactose intolerant.