Hello this is my first post. I had an immunosuppressant treatment for MS in September 2018. I had a viral cough after a month which resolved end of November. In February I had a lung function test. I saw a respiratory consultant two weeks ago and he said the test showed my lung function is about 70%. I am having a CT scan of the lung tomorrow which he requested to find the cause of this but I'm not due to see him again until the end of July. Would I get any result before then or do I have to wait til July? Also would it show if the treatment was the cause of the reduced lung function? It can cause blood clots and pnemonitis but I had a d diner test in November which showed very unlikely to have a clot. I had not felt great since the treatment in September, some tachycardia and thought it was heart related. Cardiologist said heart ok but I'm on Bisoprolol for high pulse and feel abit breathless at times and very pale/ purplish complexion. Was on propanalol but swapped over after GP stopped propanalol and I felt awful. Im 49 and otherwise fit with type 1 diabetes. Would I have symptoms with 70% lung function. I feel like I am going mad as I keep going to drs saying I dont feel like I am getting enough oxygen and my heart rate is going high when I'm doing a little exercise, and they are telling me I am fine. Any advice/knowledge gratefully received. I know very little about lung tests/issues. I was used to going running every day so was fit before all this.