Hayley,
Did you mean that you actually passed a worm a foot in length or did you mean inches? Just wanting clarification.
I freaked out and mine was only an inch...maybe a little more. I was too freaked out to really look! :-)
To those who didn't find anything, if you just have small ones, you will mainly see different size white specks in your stool because they are compressed inside the bowel movement. The only long one I saw got stuck on the way out...(I still shudder at the thought) is the only reason I saw that one. My daughter's stool looked like she had dirty rice in her stool. She had a bunch.