I did the normal urine test and doctor said I have excess protein in urine and ask me to urine into a bottle for urine culture test. Should I be worried?

Try drinking lemon water, at least 750ml to a litre per day. For a week or until your next test. See if there's any difference. Lemons, the oil from lemon rinds esp can help with urinary problems, and kidney problems. I've been taking it, but lemon essential oil, three drops in my water bottle. Every day.