Read the Detox Stages in the FAQs for and idea on the cleansing timeline and decide what your goals are. 10 days is just the >minimum< the body doesn't even go into the deeper detox stages til around day 8.
You're not gonna be done detoxing a lifetimes worth of toxins in 10 days or 40 days even. The pink tongue and/or signs of real hunger are pretty good signs that you can stop for this go round. You generally stop passing solids after days 2 or 3.
The Master-Cleanse is just the clean up faze what you do after is the real deal maker of reaping the real rewards in the rebuilding faze.