Yes - breastfeeding suppresses ovulation only when all three LAM conditions hold: baby under 6 months, exclusive day-and-night nursing, and no returned period - and it fails silently: ovulation resumes about two weeks before the first postpartum period, so fertility returns before any warning.
If another pregnancy now would be a problem, use real contraception; breastfeeding-compatible options include the mini-pill, hormonal IUD, implant, shot, and condoms - the combined pill is usually delayed early because estrogen can trim supply. The postpartum visit is the place for this conversation.
What to do
Common questions
Can you get pregnant while breastfeeding?
Yes - breastfeeding is only conditionally protective, and it fails silently. The protective version has a name - the lactational amenorrhea method (LAM) - and it works only when all three conditions hold at once: the baby is under 6 months old; you are exclusively or nearly-exclusively breastfeeding (day and night, no long gaps - no formula, no solids, no sleeping through); and your period has not returned. Break any one leg and the protection drops sharply. The silent-failure part is the trap: ovulation resumes about two weeks BEFORE the first postpartum period - you are fertile before you get any warning, which is how "but I was breastfeeding" pregnancies happen. The practical answer: if another pregnancy now would be a problem, use real contraception - and several methods are breastfeeding-compatible: the mini-pill (progestin-only), the hormonal IUD, the implant, the shot, condoms; the combined pill is usually delayed early on because estrogen can trim milk supply. Ask your provider at the postpartum visit - that conversation belongs there. Pymander, a free AI doctor available 24/7 by text, can help you sort the options.