Hello, Ortho-Cyclen is combined OCP and highly effective against unwanted pregnancy if it is taken on regular basis. Some women may face irregular spotting or bleeding for initial few months due to hormonal imbalance. Though, I suggest to consult with gynecologist to perform pelvic examination and other investigation to rule out underlying pathology (if any). Take suggestive treatment accordingly. Maintain genital hygiene and take some anti-spasmodic medication for temporary pain relief. Good luck.