Is It Okay To Drink Diet Pop While On The HCG Diet?

I am on day 12 and am really craving a diet soda, I guess because I am usually not a tea drinker, but this is more about boredom and needing a little something different.  I appreciate the versatility of the lemon at this poiint, and everything I read says the more you stivk to Simeons basic outline, the better the loss.  I have lost 13 pounds in 11 days!  Was tiored and a bit fatigued and cranky the first days..I have evened out and have noticed my mood pretty consistent , better than the usual with sugar highs and lows with my usually high carb intake..
DM in HCG land

The diet notes you can have two diet drinks a day. If you can find a diet drink that doesn't taste awful let me know.

No.  My doctor said not to drink any diet pop while on the HCG diet.

I believe this diet protocol does allow for artificial sweeteners.  Diet Pop should be close a zero calorie drink.*

*I do not personally like this diet and am not advocating that you be on it.  Always consult your physician if attempting this diet method to be sure that you are not setting yourself up for any harm.

I did this diet back in December and I had great success.. I lost 24 pounds in 28 days and felt wonderful while doing it.. However I still had 15 pound I wanted to lose and I just started the second round 11 days ago.. I have really been struggling. I have only lost 4 pounds so far and I am so incredibly hungry. I also feel very tired and grumpy.. I am debating if I should give it up or not. Has anyone else had this problem or have any suggestions for me?