Apple cider vinegar (with the mother) a couple of table spoons in a bottle of water.

@lifewithlynnieandwill88, thank you ! how long does it take to work ?

@kclaireeabbey it depends on the severity. Just down a bottle (water and couple tablespoons) and see how you feel. I do it for UTIs & it usually eases the pain after a couple of bottles. You still may need to go to the doctor but it will give you so e relief until you get an appointment.