What Liliana writes is true. If you decide to switch to a progestin-only pill while taking a classic estrogen-progestin pill, you can do it right away. Just change pills and take the new one prescribed by your gynecologist.
Women who do not menstruate (because they have recently given birth or are breastfeeding, or because they have amenorrhea) can start taking the progestin-only pill at any time, always following the recommendation of a gynecologist, who often, in these circumstances, may recommend the use of condoms for the first 7 days to ensure maximum contraceptive safety.
