I had a hip replacement now 3 mos. Before the operation I have had breathing problems, pulmonary fibrosis, I have been on Symbicort, and it was working, I was not on oxygen. After the operation, I am now on oxygen, and everyone tells me my breathing will come back eventually. Please advise it it will come back and just have to use my Symbicort, and not oxygen. Was there a chance the Anesthesist maybe expanded my lungs and they are stretched. Will my normal breathing come back eventually.