You can, of course, use both Ovestin and Vagifem. I would get your private practitioner to write to your GP telling them this. FYI, I use 5 Vagifem a week, Ovestin internally on the non-Vagifem nights, and Estriol Cream externally every other night. The Ovestin is some left over from a previous prescription, but I have both Vagifem and Estriol Cream on my current list of repeats. Have you considered the Estring for internal estradiol plus Ovestin for external issues? Are you also using a good moisturiser or emollient externally?
JP x