Hi. you did suffer from UTI and vaginitis
. The doctor prescribed you appropriate antibiotics , but as your infection is not clearing up even after the antibiotics. The only other cause of white patches on vagina is Vaginal Thrush
. You should apply MICONAZOLE
CREAM thrice daily to your vagina for 5 days. Your infection should clear up with this treatment.
I hope this solves your problem
Dr. Salman Naeem