The original definitions of sepsis and related conditions (SIRS, severe sepsis and septic shock) are now more than 20 years old (Sepsis- 1 originated from the ACCP/SCCM consensus meeting in 1991 and Sepsis 2 from 2001)
Lifting something heavy. This caution is really for women who can cause a placental tear in the second or third trimester. This does not necessarily mean a miscarriage, and usually if you feel terrible pains later, it just means that you strained one of the round ligaments holding your uterus in place. A little rest will be all that is needed.
In most pregnancies, the placenta stays attached to the upper part of the uterine wall. In a small number of pregnancies, the placenta detaches (pulls itself from the wall of the uterus) too early. Most of the time, only part of the placenta pulls away. Other times it pulls away completely.