My wife, who has reached the prime childbearing age, is naturally meticulous and always carries around this 'rhythm notebook,' or what you might call an 'ovulation diary.' It details her ovulation cycles, body temperature, the start of her menstrual cycle, and even the days when she and I were actively trying to conceive. However, it seems that my wife lost this precious 'ovulation diary' somewhere on her way back from shopping the other day. We frantically searched for it but ultimately gave up without finding it…
