This information is used to plan intercourse and abstinence so as to achieve or to avoid pregnancy. The common two-phase temperature pattern that is comparatively lower before ovulation and higher after ovulation. Breastfeeding The process in which the mother nourishes her infant with her breast milk. The infant receives only breast milk from its mother, no other liquids or solids are given. Mothers who exclusively breastfeed whenever the child demands feeding usually experience delayed ovulation, which in turn delays pregnancy.
Some women experience an early return to fertility despite exclusive breastfeeding.
The infant is given liquids and solids in addition to breast milk. Mothers who partially breastfeed usually ovulate regularly. A woman cannot avoid pregnancy through partial breastfeeding alone. A traditional method of natural family planning. The fertile phase of the menstrual cycle is determined by calculating the length of at least six previous menstrual cycles.