While the Paragard and hormonal methods that don’t contain estrogen—the shot, the Mirena IUD, the implant and the mini-pill—are [safe for people who are postpartum to use](https://www.bedsider.org/features/175) immediately after giving birth, combination pills, which contain estrogen, shouldn’t be used until three weeks after giving birth, since estrogen can increase a postpartum person's risk of blood clots.