PCO ISSUE /Infertility /Clomid

Z
I'm really sad this evening I went for check up after taking Clomid in the first time after suffering miscarriage and PCO was discovered after 9 months .. Anyway I feel shocked it did not work .
The doctor give me for my next cycle to take Clomid twice a day instead of once and told me that my chances to get pregnant in my current cycle is really low . Also note that it is my 13th day in my cycle 
Any one has got pregnant with Clomid and how many cycles it took you to get pregnant. 
I feel so sad 😩