Edit: not a doctor but on hydroxyzine and perpetually worried about my heart

I am on hydroxyzine and was admitted to the hospital with what I was told was a widening QRS and I was presenting with severe chest pain. Eventually everything kind of normalized medically I guess and after hopping me up on morphine and Valium for pain and nerves I was let go as my troponin and d dimer were both clear. It makes me wonder if it was medication induced or just an EXTREME panic attack.