your problem is cough, cough, cough and over weight. You are only 33. Not mentioned your height. You are a chronic smoker, frequently changing the brands. Whether filter, light or in whatever form cigarette is harmful. You have the willingness to quit but you don't have the strong willingness. If you want to quit, do it at one stroke
. No slow quitting. You may get some with drawl effects. You must anticipate and face it. Without any supportive measure stop it immediately. you have running nose. Cough may be dry (smoker's cough) or wet or productive like what you have (associated with respiratory infection). The dizziness
and feeling of blood rushing to the head is cough syncope
(due to increased blood flow to the brain by prolonged forceful cough, Some time produces fainting
also). So quit smoking
You have the main risk factor - obesity - investigate and treat obesity if needed. Have strict control over your intake of food along with jogging, swift walking or mild exercises.
Before too late act now in order to avoid later regret.
Best of luck