Since mom's exposure to hormones in the morning-after-pill is of short duration, any hormones passed onto the baby via the breastmilk would also be of short duration.
If desired, mom can pump and dump the breastmilk on the day(s) she takes the morning-after-pill. It is best if mom uses a reliable form of contraception
, other than oral contraceptives, when breastfeeding
a young baby.