I took my first Xanax a couple weeks ago, I only was brave enough to take 1/4 of a .25 mg pill.
Which means you took .0625 mg.
Assuming that people react to xanax the same way that rats do, and assuming you weigh a feather light 50kg, it could take about 110g of xanax to give you a 50/50 shot at lethal overdose (assuming no intervention, either).
To put it in perspective, you would have to take about 440 of those pills, or 1760 times the amount you took.
Xanax really does work miracles on anxiety for 99.9% of people. You should give it an honest shot.
I understand if you don't want it to be a crutch. It's not a permanent solution, but if your Doc recommends you take it regularly for a short period of time then you should. Feeling 'normal' for two weeks might go a long way in and of itself. Sometimes we forget what it's like to feel 'normal'. I don't know your story but, it might give you time for a more long-term medical solution to kick in, or better yet, maybe you could use it with some CBT as a last resort.
I took 1mg after 36 hours of not sleeping and high anxiety and I was able to stay up, perfectly coherent, dealing with clients and all, until i laid down for a second at 7:00PM and fell asleep for 9 hours.