Listen to your endo hun, and see how you feel.
If you start going backward you can always go back on it, no biggy. I know some people find it helps their mood and libido, but I have heard others have the opposite. Its still debatable if progesterone has any real affect on development. It seems to help some and not others.
The most important thing for development is having unopposed estrogen in your system, which is what you have. So yeah, try it and see hun!
