For plot-related reasons, the following needs to happen in my story; woman is pregnant, miscarries either in the second or third trimester, is unable to conceive afterward. My questions are as follows:
1. What would cause the miscarriage?
2. What would cause the infertility? Would it be the same thing as what caused the miscarriage? 2.5. Or is it conceivable that, in a setting with extremely crude medicine, she could either catch an infection or have scarring from delivering the fetus?
3. Is this scenario even plausible in the first place?
Google and Wikipedia are of no help, as my question is far too specific, and the wikipedia articles are all assuming the pregnancy is taking place in modern day.