Manxcatwoman,
You are not alone. I have exactly the same experiences, probably because of Ambien. I even eat food at night (without realizing it and waking up with no memory of it but faced with the "evidence." I even eat food I don't like. I cannot buy ice cream or other sweets because they disappear. My kids joke about mom's eating binges. Makes me want to cry.

Also be aware that Ambien may be responsible for sleepwalking/ driving.