Chest prblms, SOB, Suffction, back pain,

I have been having chest congestion, chest heaviness, shortness of breath, sometimes suffocation , one time can't see properly (blurred eyes), i have been facing these problems since October 2016 in the starting it was only Shortness of breath then after some time chest problems started now i have been taking some medications from last 2 or 3 months,medications are :- levocetirizine ip 5mg tablets, diclofenac prolonged tablest, ranitidine tablets ip 150mg, amoxyllin capsules 500mg, and other orally liquid syrup, whenever i am taking these medication i do not have any problems but when sometimes i forget to take these medications then the probles started again, my upper body parts (neck, face, head) starting heating up, then suffocation, then i have to take medication to avoid these problems, also i have been having back pain from last 1 month , i had been used many treatment like moov, volini spray but nothing resolved, (i want to tell to that i heavly smoked from 8 years but quit