Chronic vaginal infection. In report.

Suffering from vaginal infection from last one year VDRL was non reactive... Urine culture positive that is E-coli. Yellowish discharge sometime thick and sometime water like itchy discharge or creamy white also come... Now pain inside vagina... In left side and vaginal opening too... Ultrasound was norml...took every tablet tht show senstivity for e coli in report... Amikacin intravenous, nitrofuranation, saltum, Cephalexin, Levofloxacin, metronidazole etc... And antifungal tab also... Fluconazole... But infection is not improving...itching and Very much pain inside left side of vagina..and i m sexually active only previous to infection... From the day m suffering from it i abstain contact.. . Please tell me... Which more tests should be done... Is this curable or not... My weight is loosing... Nd constant pain and itching is vry uncomfortable... Please help me..