Hi all, I don't really know where to start. On the 7th of January I was awoken in the early hours to my heart pounding out of my chest, short of breath, pressure in head, nausea, diarrhoea, agitated with a feeling of impending doom, once my heart rate started coming back down I started shaking uncontrollably. Went to.A+E had ECG, chest ct scan x-ray, blood tests all came back normal. Since then, I keep getting these attacks a couple of weeks, especially around me. Period. Now my cardiologist has diagnosed me with inappropriate sinus tachycardia. But I'm not convinced. These adrenaline surges are horrific when they happen im convinced dying. I have recently spoken to my gp, and she asked if the cardiologist had suggested adrenal tumour. Now I'm freaking out and don't know to do. I feel so unwell, and I'm living knife edge waiting for the adrenaline surges to start. I just don't know what to do.