Your own statement is exactly correct: if caused by an STD, urine cloudiness would be due to pyuria (white blood cells). Cloudy urine without WBC is never due to infection of any kind, but generally is related to fluid and food intake and urine acid/alkalinity balance.What does it mean if your urine is little cloudy?
When the urine does not have its characteristic clear appearance, it is often referred to as cloudy, turbid, or foamy urine. Cloudy or foamy urine may occur occasionally due to mild dehydration; when it occurs in the absence of symptoms and goes away rapidly, it is usually of little consequence.What foods cause cloudy Pee?
However, the vitamin content of certain vegetables might cause cloudy urine, but would only occur if you ate large quantities of them. High doses of vitamin C and B vitamins can be associated with cloudy urine, but it occurs more often with high-dose supplements than a large intake of vegetables.