My life partner of 25 years has the following symptoms. Difficulty breathing, o2 sat drops to 84 percent walking around Dr office (was prescribed home o2), extreme fatigue, weight loss, severe pain right upper back, nausea, vomiting, projectile vomiting, Extremely productive cough with difficulty getting it up. She has been prescribed the O2, inhalers and chantax to stop smoking but is not improving. Chest xrays and listening to lungs say clear. She seems to be dying. Please help me