Lost tampon?

Have any of you ever lost a tampon in your woohoo?? could you feel it? was it painful? have any of you accidentally had sex with a tampon in? I ask because one morning I was putting in a tampon and it hurt pretty bad, so I took it out and felt up there and couldn't find a old tampon (I thought maybe I forgot to change it oug) but couldn't find the string. I had sex with my boyfriend just now and didn't have any pain in my pelvic area or anything. I even went fishing deeper but couldn't find anything. so sharing your stories would help me ease my mind haha