Horrible

I have been smoke free for 10 weeks. After about a week I guess I started having severe attacks. I felt tightness in my chest and had feelings of having a hard time getting a deep breath. I went to the ER several times which had X-rays that were normal. I went back to the ER a couple weeks ago and had a CT scan that showed mild COPD. My PCP told me last Tuesday that he was not worried about the CT scan because sometimes they are not correct. My saturations are always 97 to 99. I had a lot of mucusy tjraot that has improved tremendously. No cough. My MD is sending me to a pulmonologist next week for PFT. I am so scared.