Hi Jessina,
I am no expert on this, but I too think that you may have passed flukes. Did you do a flush?
After my third Liver Flush I was shocked that I had produced similar things. I looked at them with a magnifying glass, then looked them up on the internet; liver flukes were the closest to what mine looked like, although they were all a little different from each other. Brownish/whitish the way you discribe them, some with little tails, also tiny little "suckers" to hold onto our insides....
Anyway, they are now OUT and not IN! Congratulations!