Question: how do you know you're having a miscarriage if you don't know you're pregnant?
Answer: Symptoms of a Miscarriage Many women don't even know that they've had a miscarriage (since they hadn't known they were pregnant), thinking that it's just a particularly heavy menstrual flow. Some women experience cramping, spotting, heavier bleeding, abdominal pain, pelvic pain, weakness, or back pain.