Natural birth control or natural family planning involves actions that couples take to prevent pregnancy naturally. It doesn’t involve contraceptive pills containing hormones capable of stopping ovulation (releasing an egg cell from the ovary). It also doesn’t use physical devices, such as intrauterine devices (IUD) or condoms.
Many natural methods require fertility awareness, which means not engaging in sex in the presence of clues that signal fertility. There are also methods, such as withdrawal and lack of menstruation during breastfeeding, that don’t depend on fertility clues.
While considered less convenient, natural birth control methods can be highly effective if done right and when couples stay committed to their decision. Reports say it can be up to 99% effective.