Spotting during ovulation is normal if the spotting lasts for a short amount of time and the blood drains in small amounts. Spotting can be due to the sudden drop of estrogen levels during ovulation. Irregular periods are usually due to the lack of ovulation. Without ovulation, conception is impossible. Oral contraceptives (provera) are used to regulate periods but oral contraceptives can’t stimulate ovulation directly. It is believed that after a woman stops taking the pills, ovulation and the regular cycles/menstrual periods will re-establish itself spontaneously.