10 days in today

I smoked for almost 19 years, and I enjoy smoking. Cigarettes were always there for me, happy times, sad times, all the times. I managed to quit for 4 years. I then experienced more stress than I've ever felt in my life and picked them back up again for a year. I finally managed to stop but the shortness of breath im now feeling is freaking me out. I went to a doctor who didnt hear anything irregular in my lungs, but referred me for scans and gave me some puffers which dont really seem to help.

Is this normal? I've also got a cough and clear gunk in my throat.

40/f.