As if having a baby isn't hard enough, new research suggests that labour is taking longer.
A study of almost 150,000 women found the average labour can last more than two-and-a-half hours longer today than 50 years ago.
This increase has been blamed on many 21st century mothers being older and heavier than their 1960s counterparts and changes in the way babies are delivered. For instance, the increased use of powerful epidural painkilling injections may be partly responsible.
US researchers compared data on almost 40,000 births between 1959 and 1966 with almost 100,000 deliveries between 2002 and 2008.
It revealed the first stage of labour - in which contractions have started but pushing has not - has got longer by an average of two hours 36 minutes in first-time mothers.
It increased by an average of two hours for those who already had at least one child.