Cervical adhesion primarily depends on its severity. If it is a mild cervical adhesion and it does not hinder the discharge of menstrual blood, affect normal cervical secretions, or interfere with the entry of semen during regular sexual activity, then it is unlikely to affect pregnancy. However, severe cervical adhesions can prevent the discharge of menstrual blood and cause periodic abdominal pain, which can affect pregnancy. Therefore, severe cervical adhesions require surgical intervention, generally involving the insertion of an expansion device.