Chest Weird Feel aftr negative echo &tmt

Dear Doctor's, I have done this tmt and 2d echo in the month of March 2022, but still now I am having same tightness in chest and flashy pain in my sternum area. How long does it take for heart to get damage after negative 2d echo and tmt. Visited 4 cardiologist all r saying everything is normal, some said lifestyle modification will help out and some said I am having anxiety disorder. Does anxiety can create physical feel. But due to the pain and tightness sensation I become so nervous and anxious. Took 4 ecg after those test all came out normal. Can some one suggest me wat else heart test should I do to recover from this hazardous feel. This feel is killing me on daily basis not able to do any work. All the time thinking of heart attack, negative thoughts and checking my pulse selfly for heart rate.