I Had A Miscarriage On Conceiving For The First Time.

I had a miscarriage on conceiving for the first time. In the ultrasounds later it was discovered I had poly cysts in my both ovaries. Doctors said that the chances that I had spontaneous miscarriage in 5 week itself could be due to bad quality of egg due to pcod. Is it true? I want to conceive again and have been asked to take clofert 50 along with ovulation study. What are the chances of successfully carrying a baby this time? Does this medicine help against miscarriage?