Well... finally met with a lung specialist. He advised me that I have chronic emphysema and may want to get on a lung transplant list. After a long walk it was determined my oxygen saturation levels dropped to 55. So he put me on oxygen level 3 mostly when active or moving about. I was so overwhelmed I didn't know what to ask him after all that. Transplant and carrying around an oxygen tank.???? I feel tired a lot but did realize it was that bad. So overwhelmed not sure what to think. Whew.. writing things down as they come for my next appointment in 6 weeks.