Can the gauze in the posterior fornix of vagina be discharged by itself?
Generally speaking, it will come out naturally after a period of time. If you are very worried, take sterile gloves with you, and you can tick it out with your fingers. However, I don't know under what circumstances the gauze entered the vagina. Personally, I suggest that it is best to go to the hospital for vaginal dilatation and take out gauze to prevent complications such as infection caused by gauze inside.