Suggest Treatment For Shortness Of Breath

i recently went to the er with shortness of breath and a fever of at least 103 for over a week. The er doctor ordered a blood test to check for a blood clot, then a ct scan with the dye or whatever it is that you get through an i.v. The doctor let me know that I have empysema, swollen lymphnodes in my chest, pneumonia (at the time), and that the scan showed two spots on my lungs that he said could be some form of malignous cancer, I probably did not say that exactly correct, but those words was included. I did a follow up with a family doctor. He took a chest x-ray and did a breathing test on me. My percentage was 61 before a breathing treatment, and 81 after a treatment. He said he did not really see nothing to indicate cancer from the x-ray but I did have the swollen lymphnodes and he wanted to examine the ct scan a little more and have another one done in 3 months. Two radiologists, that looked at my scan results from the er, told me I needed to get to a doctor as quickly as possible, and I did, Im kinda concerned that he did not seem to take much interest in the possible spots and am very concerned and would like to know what I am dealing with. The COPD is bad enough and I have alot of trouble with shortness of breath just walking a very short distance and my back has began to hurt alot just under my shoulder blades. Any advice???