Posterior bleeding, but no bleeding when lying flat normally, what's the reason? Yes.

Patient's question:

Sure, here is the translation of the content you provided:
No

Doctor's answer:

Hello, this situation may be considered a possibility of cervical erosion. If it is severe, there is a possibility of cancer. It is recommended that you go to the hospital for examination and treatment. If it is mild, you can take Antifertility Tablets and use Xiaomi under the guidance of a doctor for medication and treatment.