I am not a doctor but it sounds as though you could have a urinary tract infection or other type of infection.

IMHO you need to tell mom so she can take you to the doctor. In most cases they ask for a urine sample and they can get the results of an infection in just minutes.

If its positive most likely they will give you an antibiotic and you will feel better in the next couple of days.

You shouldn't let it go because it can get worse. Let mom know