What is the reason for natural miscarriage at 19 weeks of pregnancy?

Patient's question:

Pregnant for more than three months with lower abdominal pain, increased leukorrhea with yellowish discharge, vaginal bleeding at 19 weeks, and uterine contractions

Doctor's answer:

If an ultrasound reveals intrauterine residue, a D&C (dilation and curettage) treatment is required. Pay attention to local hygiene and change underwear frequently. Sexual activity is not allowed for one month after the surgery.
There are many causes that can lead to habitual abortion. Patients need to seek medical attention promptly. It is recommended to go to a top-tier hospital for treatment. Monitor the progression of the condition and avoid indiscriminate treatment. Emphasize self-care, maintain a balanced diet, and stay clean. Best wishes for your recovery!