I would go see a doctor, it sounds like either a yeast infection or urinary tract infection and you need to be treated for it. Good luck to you.
I would def get checked out! There is a forum on here called ask a dr they may be able to help you! Good luck.
Have you had any unprotected sex recently? Could this be an STI/STD. If not it could just be a mild case of thrush. You can buy canistan over the counter which is a pill for the internal infection and a cream for the symptoms.