A research study done at the University of North Carolina looked at which was a better predictor of conception success: sex based on basal body temperature charting results or changes in cervical mucus. (verywellfamily.com)
You can find sample charts in some fertility books, such as Take Charge of Your Fertility (Harper Perennial, 1995)-- a book considered by many to be the go - to resource for basal body temperature charting guidance. (verywellfamily.com)
They found that basal body temperature charting correctly predicted the exact day of ovulation only 43 percent of the time. (verywellfamily.com)