Anxiety and fear of dying from attack.

Hi doctors I have been on medication for anxiety and fast heart rhythm for the last 2 years.. and now  i am feeling  better and slowly slowly reduce the medication but when i saw some news of heart attack or cardiac arrest suddenly my heart rhythm pumped very fast . And I suddenly have panic and fear of the same symptoms as mentioned in the news channel or social media ..and i am not able to move on from my mind for the last 1-2 weeks .. and i regularly check my lipid and liver test which shows very healthy.. i don't know still i have a fear of dying from heart attack and cardiac arrest.. please suggest some medicals doctors for better treatment for come out from this all shits i have to live healthy and anxiety free life.. for now i only takes CIPLAR LA20 & REXPIRA LS in emergency situation not regularly. Please help me and suggest the best doctor