Hello. Please Help Me. I Have A Lost Tampon With

Hello. Please help me. I have a lost tampon with blue plastic as well for 48 hrs. Went to ER did Not see anything with pelvic tools. But I feel it I know it's in there maybe behind vagina wall I don't know. But I know my body its there. I was given meds for 10days to prevent any infections. I cut myself with nails have a few abrasions trying to pull it out. They did not see it I know it's in there. I feel sick. Please help me. I'm itchy I feel numb mucus on stool Less urine. What do I do?