Clomid is actually an oral medication that can become used to trigger ovulation. It really works by blocking estrogen receptors at the hypothalamus, and is an important "hormonal control building" for the figure. Whenever this occurs, the hypothalamus is stimulated to release follicle exciting hormone (FSH), and luteinizing hormone (LH). These are the of course developing ovarian stimulants, which prompt ovulation in a regular cycle.