This will make all of you feel better! I was on a sailing trip in the South Pacific and the same thing happenned to me. Smell, brown discharge, I was scared because we were miles from civilization. Three days later we landed in the Kingdom of Tonga (not sure that is civilization!) and they had a hospital of sorts. My husband accompanied me and they found nothing but I really think it had finally fallen out after checking for it everyday. Talk about embarrassing! Tin roof hospital with concrete block walls and all the nurses giggling about this silly American women who lost her tampon. Now I am back home and my husband is still on the boat and the head (bathroom) is down. Bet when he takes it apart it is that damn tampon. Glad I am not there!