Hormonal Contraceptives are the first step of therapy for Menstrual Abnormalities, Hirsutism, and Acne in women who have PCOS and who are not interested in conceiving. Basically menstrual periods last four to seven days and occur roughly every 28 days. Irregular periods include the periods which occur fewer than 21 days or more than 35 days apart. Being The Best Doctor Gynaecology and Obstetrics in Lucknow, Dr. Akanksha Singh provides proper medications to you for this problem. She prefers to provide the test first for detecting the problem, then she starts proper treatment for irregular menstruation and PCOS.