2 inch things looking like flat peices of paper that you can see thru

Ok I did my Liver Flush last weekend and my parasite cleanse before that for three weeks, last week a break on the parasite cleanse. I started the parasite cleanse again today and I am doing p&b shakes that last couple days. I used a strainer the last bm and noticed big pieces of what looked like paper only you could see thru it. What could this be?? Heidi