Stages of Labour

1st stage of labor begins with contractions that are close enough and strong enough to bring about a change in your cervical dilation. The first stage ends when you are 10cm dilated.

2nd stage of labor is pushing and delivery, which can last from 20 minutes to 3+ hours. Contractions are slower, coming 2 to 5 minutes apart and last 60 to 90 seconds. With each contraction, you push until the baby moves down the birth canal.

3rd stage of labor is the placenta delivery. During this stage, your uterus mildly contracts to push the placenta out.

Afterbirth is the placenta and other membranes that are pushed out of the uterus after your baby is born.

Source: https://www.webmd.com/baby/pregnancy-glossary