That is great! If you do not believe me just tell everyone you come across. They will tell you that they cannot do it. Also you can do more. You can fast for 3 days tomorrow. Then later fast for 5 days. Then after a few days fast for 7 days. I call this the prime number fast. Did you only consume pure water during your water fast? Some will think it is OK to take a vitamin or broth (which will make you fat).
If so, the reason you did not lose more weight was because your body found more dangerous problems it had to fix first otherwise you would have died. So you saved your own life. That is better than losing 100 pounds. WAY TO GO. You need to brag about it to everyone you come across.