Hi Cathy58
Using oxygen does not automatically preclude you from driving. Your physician will advise you accurately.
Back in the 90's my father drove with oxygen. He was severe C.O.P.D. . He loved driving and became his only hobby.
But... to our horror, he would turn off the oxygen while driving! The results were very noticeable! (so we told his specialist what Dad was up to. So Dad got the sternest lecture of his life!)
For the last 5 years of his life, we all were interrogated as to whom had done this!
It remains the family joke, as he never did find out.
We enjoy a double victory: Dad continued to drive accident free, right up until his death ! He died in a hospital bed from his long term lung issues, and never harmed another with his driving!