Bleeding during intercourse with a Mannheimer’s ring is not considered to be related to the IUD, but it cannot be completely ruled out. If you are sure that it is related to the IUD, you can remove the IUD and use other contraceptive methods. Bleeding after intercourse is considered to be a possible cervical disease, most commonly seen in cervicitis, cervical tumors, intravaginal polyps, vaginal tumors and so on. You can see a doctor for colposcopy or gynecological examination, and give appropriate treatment according to the examination results. If it is caused by inflammation, you can actively give anti-inflammatory treatment measures, such as local use of ofloxacin suppositories or metronidazole vaginal effervescent tablets. If polyps are formed, laser surgery can be done. If you consider vaginal or cervical tumors, you need to do a local pathology biopsy, according to the results of the examination to determine the severity of the disease, and then consider surgical treatment.