Urinalysis for preggy

I found out from last week's urinalysis that I have +50 pus content on my urine but no bacteria found. Nakakabahala kasi sabi ni OB pag hindi daw bumalik sa normal, may further tests pa at magpprescribe ng additional gamot. Nung last urinalysis ko a month and half ago, normal naman yung results. Any mommies who went through the same? Ano pong advice/recommendations nyo that worked for you to make your urine normal?