For about 2 weeks now, i've been cough up alot of mucus and having a heavy and painful feeling in my upper chest area. i don't know weather it's smoking related or maybe where i've been ultra busy and haven't relaxed but i would like some feedbackplz?

In a 24 year old it is highly unlikely to be something that is serious. However, what is serious is that you smoke and that will eventually lead too health problems. Your symptoms are probably smoking related. If they persist for another 2 weeks, see you doctor. Get some help to try and quit smoking. That's the best medical advice any doctor can give to any patient.

Please try to quit smoking, which is associated with COPD and wheezing. Bronchitis and pneumonia should be rules out. Provide a sputum sample and see urgent care or your physician. Watch for signs of bleeding and have a TB test,flu vaccine and COVID-19 test and vaccine as indicated A virtual consult with Health tap is available.

Cough lasting more than 2 weeks warrants an evaluation by a doctor, preferably by lung specialist. It may be smoking making a lung infection worse, either way it is imperative that you get it checked out. Wish you good health!