Aura: A sensation or feeling, such as flashing lights, a particular smell, dizziness, or seeing spots, experienced just before the onset of certain disorders like migraine attacks or epileptic seizures.
Breakthrough Bleeding: Vaginal bleeding at a time other than the menstrual period.
Cardiovascular Disease: Disease of the heart and blood vessels.
Cervix: The lower, narrow end of the uterus at the top of the vagina.
Deep Vein Thrombosis (DVT): A condition in which a blood clot forms in veins in the leg or other areas of the body.
Endometriosis: A condition in which tissue that lines the uterus is found outside of the uterus, usually on the ovaries, fallopian tubes, and other pelvic structures.
Estrogen: A female hormone produced in the ovaries.
Fibroids: Benign growths that form in the muscle of the uterus.
Hormones: Substances made in the body by cells or organs that control the function of cells or organs. An example is estrogen, which controls the function of female reproductive organs.
Ovaries: Two glands, located on either side of the uterus, that contain the eggs released at ovulation and produce hormones.
Ovulation: The release of an egg from one of the ovaries.
Progestin: A synthetic form of progesterone that is similar to the hormone produced naturally by the body.
Uterus: A muscular organ located in the female pelvis that contains and nourishes the developing fetus during pregnancy.