HCM Obstructive with cardiac arrest and icd. Definitely have chest pain often especially at night from the thickening of the septum and difficulty in the heart pumping. They don’t suggest nitro which I’ve had at ER and it only gave me a massive headache with no pain relief. I take a baby aspirin or two for the pain and sometimes it helps. We’re all different so I hope you find what you can live with symptom wise. Take care