Puerperium
The time immediately after the delivery of a baby.
(In Latin a 'puerpera' is a woman in childbirth since 'puer' means child and 'parere' means to give birth.) Puerperal fever is childbirth (or childbed) fever due to an infection usually of the placental site within the uterus.
If that infection involves the bloodstream, it constitutes puerperal sepsis