Vagifem contains estradiol, and Ovestin and the generic estriol cream both contain estriol (obviously!!), so they are different types of oestrogen hormones. I wonder if that makes a difference? Otter15, are you using the weaker, generic estriol cream? I seem to have become allergic to Ovestin as it now makes me itch like crazy and makes the external soreness worse.
Scottishgirl, I know how you feel, that is exactly what happens to me. A few days of feeling OK then back to square one.
JP x