Your welcome! I do hope you feel better soon and just remember there ARE a lot of options to help with your condition while pregnant.
On a side note, if your doctor tells you to stop Xanax cold turkey you must NOT follow this advice and must seek advice from another doctor. Xanax can NEVER be stopped cold turkey - it is dangerous to do so and the fact you are pregnant is irrevelant. I suspect you already know this but I want to drive this point home.
Take care and please keep me posted.
BTW: I have suffered from anxiety/panic disorder for over 20 years and gave birth to my daughter a little over a year ago. Feel free to PM me if there is any thing you ever need to talk about.