That sounds great. I hope you have some luck with the O2.
My husband and I travel to Las Vegas regularly and (as you can imagine) Las Vegas is not conducive to migraine headaches. I have on occassion stopped at the Oxygen booths (they're all the rage right now) and sat for 10 minutes breathing in pure oxygen. I always feel better afterwards and if I have a slight headache it always goes.
Goodluck on your journey.
I cannot always control what goes on outside. But I can always control what goes on inside.