Doc Says I don't ovulate. .

So I've been to the doctor and he told me that although I have AF that doesn't mean that I ovulate he did some testing and said that it showed that I didn't ovulate he put me on Provera and I got pregnant but it resulted in a miscarriage this was in 2011, since then I've been back to him and all he keeps saying is for us to keep trying the natural way. .has anyone else ever been told this?