It's highly unlikely for a 57-year-old woman to get pregnant naturally.
Most women experience menopause around their late 40s or early 50s, meaning their ovaries stop producing eggs. While it's possible for a woman to have a late period or a few irregular cycles after menopause, it's exceptionally rare for a woman to get pregnant naturally at this age.
While there have been rare cases of women getting pregnant naturally in their 50s, these occurrences are considered outliers and often involve unique circumstances.
If a 57-year-old woman is experiencing a late period and wishes to avoid pregnancy, it's essential to consult a healthcare professional for guidance and advice.