I stopped using the progesteone cream about a month ago and started the things Hv recommends... the hairs on my chin are much lighter and sparser, and that tells me what I'm doing is working. I just hope the progesterone cream didn't do any damage.
In most cases there is no long term damage. Everything will eventually balance itself back out. It is like going off birth control pills. The hormones will be really out of whack for a while, but they will eventually balance back out if everything is in working order.