Woah Ivy!!! Have you posted this over on the parasite Forum yet?? Might be a good idea to. They're experiencing TONS of worms over there! But I have to say that, so far, I haven't heard of someone passing something ALIVE!!! eeek...you're definitely going to get some sort of prize once they find out about this!
I guess because you really did feel it...then pulled it out, you got it still squirmin'. Most people wait until they pass them in their stool, so they're already died. ick!! That must have been kind of traumatic, I'd think!
Get over onto the parasite forum and someone will tell you what to take to keep getting them out. Now that you know you've got 'em, you have to get those baby's out!!