It's hard in the midst to do stuff that is good for you, I totally know. IMO you should call your psych and tell them the Ambien really wasn't doing it for you and you had to take 2, but you were nervous to say so. I DOUBT they would be upset, some people need more. Like I said, they told me to take up to 1mg Xanax (2 of my pills) and 1 10 mg Ambien to sleep and if that didn't work they would try something else. They WANT you to sleep, they WANT you to do this until you "get out of the weeds." They AGREE (at least my doctors here agree.) I figure with meds, it is best to be upfront about what you are really taking so they can help you best, but I am totally passive and quiet and self-deprecating too, so I can totally understand why you didn't want to tell them. *hug*
How are you? Are you feeling well? Take care!