I haven't felt right since yesterday. I went for myself usual mornng run and felt myself really struggling and my run turned into a very lethargic walk. Was fine after that until I went for a long walk in the evening, I felt very SOB by end of it and not right for rest of evening. Today. Have not felt right since I woke up. I was on the phone earlier and fond myself out of breathe just talking,even walking to kitche is tiring me. PF is fine but never really corresponds to how I feeling. My chest has been tight all day and although I have taken reliever I do not feel that it has made much of a difference. It probably won't develop into anything as it doesn't usually but it is my summer holidays and I'm fed up of feeling this way and having to cance plans also. I haven't moved from the sofa all day.