I had a horrible virus-y thing a couple of months ago where I had a tight chest, cough and felt rubbish. My peak flow dropped from 550 to 280-350. Steroids and inhalers didnt help, not sure did anti-biotics did either. After about 6 weeks it seemed to have run its course and I started to feel considerably better. However, 2 weeks on and I still feel very weary if if I exert myself at all and my peak flow is stuck at 400. I have sort of got 80% better and got stuck there. Any suggestions as to what/why etc? I had a chest xray, blood tests and spirometry a month ago and all came back normal. Thanks for any thoughts.