I should have said in my earlier post, that at 21 I had a persistent cough for over a year. Eventually after xrays, skin tests, blood tests etc, I was dismissed by a doctor as suffering from nerves, because I was sitting my final exams at university. .
My GP refused to accept this and sent me to different hospital, where after a number of tests, I was immediately admitted, as by this time I was 6 stone in weight and lung cancer was suspected. My newly married husband and my mother were advised I might not pull through.
I spent six weeks in ICU and was allowed home on Christmas Eve.
The diagnosis, Late onset, brittle asthma, not lung cancer. Speculation only makes things worse. That was forty five years ago and I'm still here!