Primary Fertility Signs
The three primary signs of fertility are basal body temperature (BBT), cervical mucus, and cervical position. A woman practicing symptoms-based fertility awareness may choose to observe one sign, two signs, or, all three. Many women experience secondary fertility signs that correlate with certain phases of the menstrual cycle. Examples include abdominal pain and heaviness, back pain, breast tenderness and mittelschmerz (ovulation pains).
Read more about this topic: Fertility Awareness
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“For Jews demand signs and Greeks desire wisdom, but we proclaim Christ crucified, a stumbling block to Jews and foolishness to Gentiles...”
—Bible: New Testament, 1 Corinthians 1:22-3.