Suggest Treatment For PCOD

hello docs.. i am a patient of pcod aged 28..and in nov 2013 .. i got married. i got my menstrual bleeding on 12 nov 2013 and 25dec 2013. and no menses till now..my doctor advised me deviry tab 10mg for five days..which i started on 18th feb 2014 and continuing..after getting my pregnancy card test negative. I want to ask that on 20th feb 2014 i had unprotected sex..can it lead to pregnancy.. as to my knowledge ovum release should not be there..i am concerned because i have read deviry tabs have bad effects on foetus..
second thing i want to ask how should i plan for pregnancy..thnx