Bp and heart rate. Back was normal.

Yesterday I was not feeling well since afternoon, at one point i felt head getting hot so i thought I should go and check BP and when I reached pharmasy I was panicked already so bp came 144/90 then palpitation i went hospital there heart rate came down to 62-65 whiich is my normal byt bp whenever they were taking measure it was raising with heartbeat. So they gave me nicardia 10mg. After taking it 20 mins later my heartbeat rose and I panicked so much that it went on rising. So they did ecg 150 heart beat. Attaced ecg, doctor said sinus techicardia and then heart rate came down to 100 in morning it was lesser after 6-7 hours. I went to a cardiologist, he said concor 2.5 for 10 days then holter. But I always have normal bp and heart rate when not in anxiety. I have had anxiety disorder. Did TMT and ECHO 2 months back all normal, did ecg 4 months back was normal.