I can top that one, Faerydust. Not by me, thank goodness, but I had a co-worker about three years ago who was complaining of pain in that area. Finally, she went to the doctor where it was discovered that she had a tampon in she had forgotten about. (That's why she had trouble getting a new one in.) The old one had been there for .... four months!
I nearly fainted out of ickiness when she told me that. How does anyone not know that??? (And please, if you know the answer don't tell me. I had forgotten about this until Faerydust posted her story.)