Hi,
Based on your symptoms, you may have a respiratory infection, such as 
bronchitis or pneumonia. The cough, wheezing, 
shortness of breath, and 
chest pain are all common symptoms of these conditions. The involuntary shakes you are experiencing could be a result of the coughing fits, which can cause muscle spasms and contractions.
It is important to follow up with your healthcare provider, especially since your symptoms have been continuing for several weeks despite treatment with cough syrup and an inhaler. Your healthcare provider may recommend additional testing, such as a chest x-ray, to rule out any underlying conditions.
In the meantime, you can try to ease your symptoms by:
- Staying hydrated with plenty of fluids
- Resting and getting enough sleep
- Avoiding irritants, such as smoke or pollutants
- Using a humidifier to moisten the air
- Taking over-the-counter pain relievers, such as 
acetaminophen, to alleviate chest pain and discomfort
If your symptoms worsen or you experience 
difficulty breathing, seek medical attention immediately.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Priyanka, General & Family Physician