natural family planning in which the fertile period of the woman's menstrual cycle is inferred by noting the rise in basal body temperature that typically occurs with ovulation

natural family planning in which the fertile period of the woman's menstrual cycle is inferred by noting the rise in basal body temperature that typically occurs with ovulation

natural family planning in which the fertile period of the woman's menstrual cycle is inferred by noting the rise in basal body temperature that typically occurs with ovulation