Hi lii,
The first week i started it i was constantly on the toilet especially after drinking the chocolate milkshake, I think it just didn't agree with me because as soon as I used to drink it my tummy would rumble angrily!
Now i have cut back on the chocolate shakes, and 4 weeks in i am constipated (sorry tmi) even though I drink nearly 6 litres of water a day!
I think your body will adjust to the new way of eating,
Good Luck
x