Hello, Clofert also known as clomiphen is an oral fertility medication used to induce ovulation in women who have trouble ovulation in order to hel[ them get pregnant. If you take clomiphen and your menstrual period has not come when you expected, then do a pregnancy test. A repeatedly negative pregnancy test after a missed period and clomiphen usually means that you did not ovulate, clomiphen did not work, and you are not pregnant. Here are three possible thing that happen during taking clomiphen: 1. you ovulate and did not get pregnant mean your menstrual period will arrive about 14 days after the day of ovulation. 2. you ovulate and did get pregnant . Your menstrual bleeding, your period will not arrive 15+ days after the day of ovulation. Do a pregnancy test. 3. You did not ovulate. If you dont ovulate then you will usually not bleed, you may not get any bleeding or it will be irregular. You may bleed or spot irregularly but its not a menstrual period. So you should repeat you beta hCG test to confirm. If you still not have period talk to your doctor to reevaluation. Hope I have answered your query. Let me know if I can assist you further. Best regards, Dr. Heang Chan Raksmey, General and Family Physician