Miscarriage/progesterone

So I’ve had 3 miscarriages in 2 years.. I have have been tested for a few things that have all came back normal when I asked my doctor (twice) if it could have anything to do with progesterone levels and maybe being tested she told me that it was a myth and it hasn’t been proven to help

after going though my 3rd MC in my early twenties with her only answer being avoid pregnancy for 3 months then we will pick up from there I’m not sure how that is a solution but at this point I’m ready to switch to a new OBGYN

I’ve just heard so many successful stories from other women regarding progesterone supplements that I thought it would be worth testing 🥺