Chest pain for 8 mnths develop daybyday.

Hello doctors, I am 22 yr old male. (Smoking last one year). I have chest pain for 8 months. I have consulted cardiologist and found cholesterol high and he asked me to low cholesterol and i did it within one month but my chest pain continues then I did ecg, echo, tmt and chest xray, everything was normal and he said no problem in heart but i feel chest pain. I don't know what to do it pains when bending forward and deep breathing in and also pain continuously. Pain all around the chest mainly centre and left , What to do whats might be my next step . I stopped smoking. Changed diet but chest pains. Do i need chest ct scan because when I asked cardio doctor he said nothing is needed u just ignore the pain. No medicine was given. Just asked to stop smoking. I did. What to do next pain still continues