what are the rationale whyProblems with the baby's genes or chromosomes are typically the result of errors that occur by chance.
A mother's health condition — such as uncontrolled diabetes, thyroid disease, infections, blood-clotting problems, or problems with the uterus or cervix — may lead to miscarriage.
Routine activities — such as exercising, having sex, working or lifting heavy objects — can't provoke a miscarriage.
And a fall or other injury is unlikely to cause a miscarriage, unless the injury is serious enough to threaten your own life causes abortion?