Your body is telling you that you were not ready to end the fast, and it is obviously needing for you to go back on the fast until you have a clear tongue.
You are not hungry but nausiated because your body does not want you to eat, it still needs to heal.
It is also wise after fasts to take a good Probiotic, such as iFlora Source or Health Start Kit by Natren.
It is also wise to do coffee enemas before, during and after fasting, as this empty's the Liver and Gallbladder dumping toxins into the colon faster and removing toxins out of the body faster.
You insert the coffee just enough to be taken up from the Sigmoid, not higher.
Most do not have a reaction from the coffee.
After fasting continue to do a Bowel Cleanse and also the Liver, Kidneys, and Blood.
Never do a fast if your elliminatory organs are not functioning the way they should be, as then they cannot handle the process of elliminating the toxins fast enough...
Cleanse the Organs first, then Fast.