I am having chest congestion, shortness of breath, chest tightness, sometimes suffocation, I am already taking some medication for these like diclofenac prolonged release tablets IP 100 mg, ranitidine tablets IP 150 mg, amoxyllin capsules I.P 500 mg and levocetirizine IP 5 mg as well as a diphenhydramine oral solution B.P etc, as sometime when I forget to take these medications I am having some kind of issues in my body like continuously having shortness of breath, have to take breath strictly or deep breath and my upper body parts (upper like neck, head, ears and face) suddenly heating up, I have been taking medications from last two months but still problems not resolved so tell me what should I do? And why I am having all these problems (i also want to tell you that I have been smoking since last 8 years but quit smoking 8 months ago.