Thank you all for the input. @Shaun brearleyI stopped taking triptans several years ago as they became very ineffective, i would definitely try them again if i had them now. @Bejeeber I have heard of using DMT, although I need to look into this further. Thank you for the references to those that have been in similar situations. @CHfather thank you for the link to your site up, excellent information! The hot shower is definitely a go to, unfortunately no help this time (cold is a trigger for me).
On the O2 coming off anesthesia, I agree 100% as I've been full blown 3x after procedures. Unfortunately, even instructions from my neuro didn't help facilitate the high flow usage The last time, i was given a rebreather mask at 4 lpm. Fortunately my wife was there and turned up the regulator. I'll be attempting again next Wednesday with the instructions from my neuro and how did the best.
As always, all input is greatly appreciated.