What is vaginal fistula?
It is a condition where urine and stool can pass via a vagina due to hole or opening in vagina that extends to urinary bladder and rectum.

Causes:
After delivery
Vaginal injury
Vaginal surgery
Infections

Types:
Vesicovaginal fistula:
It is a opening from vagina to urinary tract.

Ureterovaginal fistula:
Unsual hole develops from vagina to urine carry tubes to bladder from kidney.
 
Urethrovaginal fistula:
Hole from vagina to urethral tubes

Rectovaginal fistula:
It form hole from vagina to rectum. 

Colovaginal fistula:
The opening from  vagina and colon.

Symptoms
Urine incontinence
Passage of stool from vagina
Bleeding in urine
Profuse odour from urine
Gas from vagina
Profuse vaginal discharge
Painful intercourse