What is causing my symptoms?

[Mottec]

Hi
Up until now I have had mostly skipped beats from time to time like two times a day where I could feel it. Mostly during excercise. Then 3 months ago I started getting a pounding heart accompanied by a sensation of adrenaline/fear. SInce then I have had two, hour long tachyrdia sessions and a week or two with chest pain. The chest pain could not be seen on an ecg, and blood tests were negative.
I still suffer from some episodes of racing heart and some minor chest pain. Ive also experienced shortness of breath as well as tiredness.
My cardiologists says it all anxiety related. I doubt that, and will get a CT scan of the heart done. Im also on two anti anxiety and anti depressive drugs, could they be to blame?
What could be causing my symptoms?
Will a CT scan bring certainty. Ive had echo done and it was also normal. My stress ecg was normal even though Ive been having chest pain just two days ago. My holter monitor didnt show anything serious.

[Occupant]

I can only say from my own experience that a CT-Scan will certainly bring certainty in that it will show that you still don't know anything.

[Mottec]

also I get a piunding heart when cigarette smoking, what is up with that?