Hi everyone, I seem to be getting worse, terrible breathlessness even moving around in my kitchen to cook. I bought a pulse oximeter from medical supplies and noticed my spo2 is 89 - 90% when I am resting. When I walk upstairs, it drops to 88% but my pulse beat now shoots up to 138. My muscles are aching even more and I kave noticed dark blueish spots on my left leg which has been paining for a while. These marks are above knee cap and on inside of leg at ankle. I have got the chest clinic on 11/1/2016. I have another appointment with the nurse for blood sample on 15/12/2015 due to low blood count. Hope some one can tell me something as I am new to the site . I keep on reading all articles to look for similarities .