I didn’t well last night, so depressed, anxious and worried. I’m already at 4 on oxygen and don’t know if I can even carry this tank and 1 tank is only good for maybe an hour. Then what? What’s next for me? With a back issue a bigger tank. It it possible that rehab can whittle me down a bit? Will I have to stay in my house for my remains days? I just don’t know if I can live that way