Historically, it's true that childbirth was a significant risk for women, with high mortality rates and complications. Many women feared pregnancy and childbirth, but the societal pressures and expectations were immense. Women were expected to marry and bear children, and there were often very few viable alternatives for them.
The pressure to provide heirs, especially sons, was intense, and refusing marriage or sex could result in social ostracism, economic hardship, or even worse. While period dramas might show women embracing these roles, the reality was often far more complex and fraught with fear and resignation.
Women did use various methods to avoid pregnancy, though many were unreliable and not widely known or accessible. Herbal remedies, prolonged breastfeeding, and other traditional practices were sometimes employed, but these were not always effective.
As mentioned by other posters, there are also historical records of women expressing their fears and anxieties about childbirth. Diaries, letters, and literature from various periods reveal that many women were acutely aware of the dangers they faced. However, these fears had to be balanced with the societal expectations and personal desires for family and children.
In some cases, women might have tried to make themselves less attractive or avoid marriage, but this would have been challenging and carried its own risks and consequences. The societal framework was such that most women had little choice but to follow the expected path.
So, overall, while many women were likely petrified of the dangers of childbirth, the pressures and lack of alternatives meant they had to face those fears within the confines of their societal roles.