Chest Pain in left side and swollen lymp

Dear Sir/Madam, My self Akash Das from Kolkata , I'm just 21 years old, I have dull chest pain in left side, 3 month dull pain and , sometime it's paining , when I feel the pain that time I go to my nearest doctor (Cardiologist), he tested my health condition like ECG, LFT, Chest x-ray, Complete blood test, Serology test, thiroied test, allergy test abnormal,I have done MTB sputum test , 1 day report normal ,I will got other 2nd day and last days report after 2days,  otherwise all reports are normal but still I have dull chest pain. When I weak up in the morning that time I feel  the pain and tightness , but after Some exercise can relief my pain, after sometime chest pain come again, one more thing when I stiff my left hand that time I feel my chest pain ,one more thing doctor some days ago(around 2week) I noticed small swollen lymph node in my left armpit, sometime it's paining but I'm not sure wher is my actual pain in lymph node area.   this is my problem. Regards Akash Das