Provera & Clomid

After 2 years of TTC with PCOS my GYN finally started me on fertility medication. I am taking 500 MG of Merformin HCL 3 times daily, 10 MG Provera for 10 days, and 100 MG of Clomid on days 3-9. About a year ago I did one round of Clomid 50 MG and it did not work. Has anyone had success with these medications? I have lost hope with having a baby of my own. I feel like it will never happen for me! Any success stories would help!