It is abnormal. chemotherapy
should not cause vaginal leaking. Either it is ascitic leaking or it is vaginal leukorrhoea. you should get it confirmed from the treating doctor.
Preop. chemotherapy is given to reduce the tumor
burden to make good surgery possible. Since 3 cycles of chemotherapy are already given your doctor might advise now surgery throgh which the leak will also be repaired. ovarian Cancers have good prognosis after treatment.
Dr. Ticku jawahar.