PCOS and trying to conceive

I've been trying to conceive for 3 years but finally decided 4 months ago to seek treatment with a fertility specialist. He put me on clomid by itself and that did not work for me. So now I am on my 4th cycle with clomid 100mg with a medication called Dexamethazone that is supposed to help me  get pregnant I just took my last pills yesterday and I am now waiting..... 
Has anyone ever done this treatment?