It can be due to recurrent UTI. Recurrent urine infections could be due to various reasons. Most common cause is stones in kidney which is blocking urine pathway. Other causes are changing sexual partners frequently, pregnancy, diabetes and of course childhood infections. The urine can also be due to retention of urine anywhere in its flow due to obstruction.
Drink plenty of water and fluids. If the symptoms persist then get it investigated from a physician.
I hope it helps. Take care and regards.