Since you seem to be offline, ill leave a response here which we can discuss later on.
The first thing which comes to mind is that you could have developed an infection which is causing the chills, the low temperature can ALSO indicate an infection in many patients and since you do have COPD, it is more likely for you to develop an infection of the respiratory tract. Usually you would notice this in the form of increased mucus production as well as shortness of breath but it is possible that you may be developing an infection at the moment and it can take some time for this to fully manifest itself.. If you do develop these symptoms then a chest xray and a clinical examination would be able to diagnose the problem.
The second possibility which comes to mind is that of a UTI especially if you have had symptoms like increased frequency, burning urination etc. If this is the case then you will need a urine analysis and culture for a diagnosis,
The raised heart rate can be explained by the above two conditions but at the same time we should consider a possibility of an abnormal heart beat or arrhythmia causing this problem. patients with COPD are more prone to develop conditions like atrial fibrillation and it is possible that your symptoms are the result of Afib or any other cardiac arrhythmia which can also cause symptoms like palpitations, shortness of breath, sweating, chest pain, dizziness, lightheadedness etc. An EKG at your doctors office followed by a possible echocardiogram would be useful.
The good thing here is that you are supposed to see your MD anyway and you can easily discuss these possibilities with him and have him run an EKG to start with.
Do you have any more questions?
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