I would like to know how trauma experienced in the birth of the first child, either vaginally or caesarean or instrumental or by the environment and other factors, impacts on the decisions of future planned pregnancies.
A woman may wish not to become pregnant after a traumatic first birth but the decision may be impacted by the cultural beliefs and expectations more especially in cultures where women have no control over their own fertility.
For educated and modern living women, traumatic births may impact decision to have few spaced births or no further births. This decision may also be based on the fact that a woman is economically dependent or independent as some partners, married or not, may not be willing to support the women who are not bearing children for them.
My answer is based on mere practical observation without any statistical evidences or direct interview of such women.
If you can find articles on cultural impact on decision of women to get pregnant after traumatic birth, you may have more information in this regard.