My son is complaining when he wee's in his diaper and even goes as far as to say its painful. he is 1 1/2 years old. if he has an infection how can i treat it at home. he has no fever but the pain have lasted longer than 3 days?

Depends: UTI's are unusual in male toddlers.They are almost always limited to the uncircumcised or those with abnormal urinary tracts which will show up in the first months though it can happen later. UTI's will generally also generate fever.That said, it does happen and an office visit/testing will be worthwhile to sort out the issue.

Office testing: Your pediatrician may screen his urine for signs of infection. Local care involves keeping the area clean and dry.