It could be due to UTI or Cancretions.
Thanks for your query,based on the facts that you have posted it appears that you have noticed small white particles in urine and had burning urination.
Most likely this could be due to UTI or passing small concretions (Stones)
Please consult your family physician and get your routine urine test and ultrasound
scanning done to confirm the diagnosis.
Please take broad spectrum antibiotics like Cefexine along with urinary antiseptic like Nitrofurantoin
twice daily and urine alkaliser thrice daily.
Get the prescription of medicines from your family Physician.
Ensure to drink more water.To keep your urine dilute This will help to control dysuria
Further treatment will depend upon the results of these test and final diagnosis.
Hope I have answered your query ,please feel free to ask if you have more questions ,
I shall be happy to help you
Thanks and Regards.