Suggest Treatment For Irregular Periods

hi, i am having a irreular periods problem. my doctor said that iam having pcod problem. i am having a boy of 6 years. now iam trying for another baby. but icould get concieved. now i have not get my periods for the last 4 months. i am undergoing a homeopathic treatment. can i take regestrone tablet . how many tablets i should take?