Chest & Breathing Problems

After doing cardio exercise i get bad cough and spit very dark mucus and sometimes very little blood (pinch of blood) as well. the blood comes only once. This continues for at least 15-20 mins after doing cardio. The coughs are very deep. More deep is the cough more black mucus comes out and sometimes i get very bad pinching pain in my chest (just middle of chest). This is happening from last 3 months. I smoke 4-5 ciggs a day from last 7 years. Recently i got medical chk up. My ECG and Chest Xray are normal. Please suggest ..HELP!!!

I am having difficulty in breathing sometimes. I am a moderate smoker and fairly obese. Also I have dust and cold allergies. Chest X-Ray indicate normal reports. I would like a consultation please.

Cough from last 4 week, breathing issue due to cough,. Due to which I feel very unconscious. Cough from last 4 week, breathing issue due to cough

Minute pain under left shoulder inside ribs and left arm feeling strained working normally no exhaustion

Recently I came to hyderabad for my business trip. There was a climate change. I am a smoker for last 8 years. 4 days back I had too much cold drink and that night I realised cough as it was coming in small quantity in white colour.I was also getting a bit pain while coughing that night. But next morning there was no pain but Instead I realized I am suffering from shortening of breathe. I have to breathe deeply once in a while to ease my breathing. No pain in chest...but I can feel a bit congestion in my chest. My question is...Is it due to cough or due smoking habit...is it a serious issuee such as asthama...or any serious lung disease. Pls ans as I am very much worried.

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I was asked for a medical check for my job at bank and in the chest x-ray report it showed "Right Pleural Thickening" .. what does this mean ?

I am having difficulty in breathing sometimes. I am a moderate smoker and fairly obese. Also I have dust and cold allergies. I would like a consultation please.

I am 21 suffering this problem .what is solution? Can you give right solution ? What kind of i should do exercises something like that...thank you