Were you prescribed this from the same doctor?
this is an addiction forum...not a good idea to give medical advice here///but if u ned an addictive drug like xanax for sleep with ambien on top of it...u may need to seek a drs advice for sure
That's really something you should talk to your doctor about since he knows your medical history. I know that's not the answer you want to hear but better to be safe than sorry. I'd just give the office a call tomorrow.
Best of luck to you!
Brian