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BASAL BODY TEMPERATURE (BBT) Your body temperature when taken at its lowest point, usually in the morning before getting out of bed. Charting BBT is used to predict ovulation. Biphasic: A BBT pattern consistent with ovulation and the formation of the corpus luteum, which secretes progesterone. This hormone will elevate the basal body temperature about one half degree during the latter half of the menstrual cycle. Monophasic: An anovulatory BBT pattern where the temperature remains relatively constant throughout the cycle.

BETA HCG TEST A blood test used to detect very early pregnancies and to evaluate embryonic development.

BICORNUATE UTERUS A congenital malformation of the uterus where the upper portion (horn) is duplicated.

BROMOCRIPTINE (PARLODEL) An oral medication used to reduce prolactin levels and reduce the size of a pituitary tumor when present. This medication often causes dizziness and upset stomach and must be started with a small dose which is gradually increased as needed. This medication is equally effective when the tablet is placed into the vagina.

BUSERELIN A long acting GnRH available in Europe as a nasal spray and used to create the pseudomenopause desirable for reducing the size and number of endometriotic lesions. It can also be used to treat fibroid tumors, PMS, hirsuitism, ovulation induction and for in vitro fertilisation.