Day 17 on the mastercleanse and I am confused about something...PLEASE HELP

Okay, this is Day 17 for me and the first time I have ever done the master cleanse. I plan to go the entire 40 days, I know I can do it and I feel really good. The question I have is this: when you drink those lemonade/maple syrup drinks do they expel through urine (i would imagine) or do they actually turn into something solid and come out as a bowel movement? The reason I am asking is because everyday that I have been on the cleanse I have a bowel movement in the morning. Just a bunch of smaller pieces, but clearly fecal waste. Actually today I had a lot and larger ones too and floaters too (sorry for being so blunt)I just want to know what this is from?? Before the cleanse I have never had any problems with constipation or any kind of bowel/colon problems in my life. Could I really be this congested or is this from the lemonade drink? Does this happen to others as well, having the bowel movement everyday of the cleanse. And do you keep going until you no longer have a bowel movement? Is that when you know you are completely cleansed?
thanks so much...Jamie
oh and I have been following the cleanse EXACTLY as told:

6 lemonade drinks a day (organic lemons, organic grade B syrup, 8oz pure water, 1/10 tsp. cayenne pepper)

salt water flush EVERY morning (2 tsp.celtic Sea Salt , 4 (8oz)cups of pure room/body temp water)

laxative tea EVERY night (smooth move)

8 (8oz)glasses of pure water EVERY day