I Had A Hysterectomy In August 2015. Ever Since, I

I had a hysterectomy in August 2015. Ever since, I have had a horrible vaginal itch. I have used the monostat over the counter. It helps temporarily. I have started using vagacil cream occasionally. I take Estriadol 1 mg. daily, when I remember to take it. Usually 3 consecutive days a week sometimes more here lately. What will help???