I haven’t fasted for 21 days but I have fasted for 7 days and the hunger went away after about the third day. I have read that in rare instances people will feel hunger throughout the fast but it’s not the norm. Usually what it is we feel is cravings for food not real hunger because our bodies are in withdrawal from things like sugar and caffeine.
Here is a link to the common stages of a water fast, what to expect.
Congratulations on 9 days, I hope your hunger goes away soon, I don’t know what to tell you that would help you with that, hopefully someone else will. By the way I like your screen name. :-)