What is the Fourth Trimester?
The fourth trimester—the first 12 weeks after birth—is a critical medical period for postpartum recovery. Your body is healing from pregnancy, labor and delivery. This includes internal wounds, blood loss, hormonal shifts and physical stress that take time to stabilize.
Some postpartum symptoms are expected. Others are not.
Understanding the difference can help you:
What Your Body Is Recovering From
After birth, your body is healing from significant physical stress—whether you had a vaginal delivery or a C-section.
Your uterus is contracting and healing
There is an internal wound where the placenta was attached. This can cause bleeding and cramping and takes time to recover.
If you had a vaginal birth:
If you had a C-section:
Hormones changes happen quickly after delivery
This affects mood, energy, sleep and body temperature.
Your body may produce milk after birth (even if you are not breastfeeding or chestfeeding)
Your body is not just tired. It is actively healing. You may feel exhausted, weak, or mentally foggy.