i also have this experience before up till now actually.
i urine quite frequently. sometimes alot sometimes okay.
i pretty used to the pattern so i not that afraid liao.
one possibility is due to masturbation.
another maybe lack of toilet training.
regarding toilet training, what you need to do is to set the time
you have to endure before you can pee. you have to condition and
train your bladder muscle.
otherwise, your bladder will just habitually and frequently feel
like peeing.
it may also be other reason, so you may want to consult the
doctor.
just dun panic or worry, cos they are useless. if it is a bad
situation, then just accept it and skip the worry part. it is
probably not a serious problem and the doctor should be able to
cure it.