I often end up spitting bullets when reading posts on here sometimes. There is absolutely no comparison between using a feminine moisturiser and a topical oestrogen cream, your doctor is so wrong!
When I looked at the ingredients in Replens (I had already been warned against using it from the women on this forum) I noticed that one of the ingredients was included in soda crystals, a product I use for cleaning my washing machine.
Go for something much more natural like Sylk, Yes, and there are other products out there. But please use Ovestin when required, if you do get an irritation mix with the moisturiser, it sorted me out brilliantly applying this way.
Along with using Vagifem every day I apply the Ovestin topically twice a day mixed with a little amount of Sylk moisturiser.