You have to wait for your doctor's appointment to get antibiotics. However, till then you can try this home treatment and OTC medicines which will help you:
You can try with some home and OTC treatment:
Take lots of water and fluids - this is virtually the most important step in home treatment.
Cranberry juice - this is known to be very useful in UTI
Urine alkalisers - Bicitra, Citrolith,Oracit,Polycitra-K, Uristat tablet, Cystopurin, Effercitrate - you can get this OTC at pharmacies, use this.
Try these steps for a week, this should give you relief.
If it persists, then show a doctor personally and get checked up. You also have to be checked up if you develop fever or blood in the urine.
Dont worry, this can be treated easily - show a doctor if necessary- be safe.