Clomid isn't great for gyno. And by not great - I mean nearly worthless. In this order--- Raloxifene>Nolvadex> long pause > Clomid.
As for the comment on long term Nolva and damage - its somewhat debatable. I was on it 3 years and all measures are a-ok. Not to say its great for you, but I am alive. If I was at gyno stopping doses, like 20-40mg, which seems common, I would run it until lump/sensitivity subsides - then another week or two, then stop.