guidelines to charting your fertility cycle, page 1 of 26
Introduction to the Guidelines
For a pregnancy to occur, three elements are needed:
1. Fresh sperm from the man
2. A live egg, produced by the woman at ovulation
3. Fertile cervical mucus to nourish and transport the sperm
the sympto-thermal double check method of nfp uses four indicators to identify the fertile time in each cycle:
- Variations in body temperature
- Changes in cervical mucus
- Changes in the cervix itself
- History/pattern of previous cycles
They will be dealt with individually and then brought together in the Double Check Rules
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