Update - I saw my doctor yesterday. He says though I do have the pulmonary hypertension, the shortness of breath is likely leftover from that respiratory virus I had two months ago combined with the preexisting lung and heart trouble. (My heart is slowly getting weaker.) So I can hope for some improvement in the shortness of breath. He did say a very modest walking regimen with a very modest increase in duration over time may help. Your prayers definitely helped!
About 10 years ago I went to Lourdes and a few days later travelled by bus to Garabandal. I think it took most of a day to travel from Lourdes. Lourdes is the place for healing. My husband got a great grace there.