Protein in Urine. Do i need to worry?

2 months ago I got my body check up done, in that I got 1+ protein in reports and 1.22 creatinine. I went to a general medicine doctor, he performed some tests in which micro albumin came 509.02, I got the test done from local lab, I immediately went to a Nephrologist in Maharaja Agrasen hospital, he performed KFT, Urine, Lipid, Hbac1 test again from the hospital lab, reports came negative for any protein and creatinine came 1.0, so he said everything is fine, but I was little confused so I performed urine test again from Saral lab, the protein came back 50 mg/dl, I showed the reports to the doctor again and he said the same thing, nothing to worry about. Can someone plz explain to me what should I do? Do I need to worry?