hello, my husband (49 years of age) has advanced pulmonary fibrosis discovered 15 years after a spine injury. He is increasingly bothered by belching/burping, his snoring is very unnatural, and his nails, that have turned inside and round, are now also showing pitch black color just under the skin. This, despite oxygen support. He is also losing weight and also loses his voice from time to time, there s persistent dry cough too. Is there something, ANYTHING that I can do to help? please advise.