Thanks for the query. Chronic vaginal infection
might be the cause, and the reason could be uncontrolled sugars, so get your blood sugar checked and get a gynae examine you, to rule out any obvious VAGINAL GROWTH, and to look exactly any lesion inside vagina. Please get back with your previous hysterectomy
Hope I answered your question, Kindly reply me if you have any further queries or any comments. I will be very happy to help you.