Hi Everyone,
I took my son and the "worm" to the doc's this am, got the script, and took it to the lab. Hopefully I will soon find out exactly what it is, though it has been in vinegar for 3 days, so I hope that it is still intact enough to identify. It is white, thin as a thread, and about 3 to 4 inches long. It was expelled in his diaper, with much gas, right after his bath, by itself--with no bm. I am glad to report that he is much better than he was two weeks ago, so maybe it will soon run its course on its own.