Hi I Had An Angioplasty Done Two Weeks Ago Exactly

Hi I had an angioplasty done two weeks ago exactly receiving four stents. Was working (computer programmer) the past week. I did not have good nights sleep due to anxiety on unrelated issue. But this morning am feeling breathless with anxiety still there. I have just sprayed GTN . Is this normal - should I still feel breathless and suffer from anxiety so soon after angioplasty? Thanks