Means based on awareness of the fertile period (the days during which pregnancy can occur):

-Counting based on awareness of the fertile period: A woman can count the days on the calendar to determine the start and end of the fertile period and the date of ovulation in which the ovulation is capable of fertilization. Abstain from intercourse three days before and three days after ovulation and this method does not apply to women who are breastfeeding or whose cycle is irregular.

The number of days of the fertile period depends on the length and regularity of previous menstrual cycles. The date of ovulation is often determined by:

• Notice changes in the color and thickness of cervical secretions
• Measurement of body temperature: a woman’s temperature rises slightly (at a rate of 0.3-0.5 °C) at ovulation (ovulation release) and at this time pregnancy can occur.

One of the drawbacks to this method is that it is not guaranteed, as its high failure rate is affected by several factors that make it loses its reliability. The presence of infections, for example, causes an imbalance in body temperature, and thus the fertile period is incorrectly predicted, in addition to the influence of other factors such as stress on ovulation.

Withdrawal method of contraception (coitus interruptus) / ejaculation outside the vagina:

Although this method has been known since ancient times, its failure rate is high and its effectiveness ranges between 70-80% at best.

Postpartum infertility

It is considered one of the natural methods that have raised controversy, as it should be classified within the traditional or modern methods. Some institutions, such as the World Health Organization, consider it a modern method, and it is based on the percentage of its effectiveness shown by studies, which reaches 98%, as in modern methods, especially if the following conditions are strictly adhered to:

• The child is completely breastfed without interruption and repeatedly according to the child's need and desire, and refrain from giving the child water or any other liquids or foods to ensure that the child's dependence for his food is entirely on the mother's milk only.
• The child should not be more than 6 months old. Breastfeeding can prevent pregnancy during the first six months after birth, and its effectiveness will decrease after that.
• No menstruation and no sign of menstruation to the nursing mother.