I have been having chest tightness and heaviness for over 2 months now, especially while sitting straight and while lying on my back. I have been to multiple cardiologists and had ecg, echo, tmt tests and all were normal. I was having inderal and petril beta for more than a month now as prescribed by the doctor as they said I had health anxiety. I just stopped 5 days ago. Since then, I also have a bit of dizziness while walking which feels internal. 3 nights ago, I took a petril beta and I felt good. Could it be withdrawal? Do I have any heart issues?