出典:Wikipedia
出典:『Wikipedia』 (2011/05/25 12:30 UTC 版)
A fertility monitor is an electronic device used for fertility awareness. Some brands are marketed only to assist in pregnancy achievement, while other brands are advertised for both pregnancy achievement and as birth control. A fertility monitor may analyze changes in hormone levels in urine, basal body temperature, electrical resistance of saliva and vaginal fluids, or a combination of these methods.