I'm new to this but I'm so worried and need some support. I had a really bad panic attack on Christmas Eve and was convinced I was dying. I had burning pains in my head and I couldn't function at all. I felt totally detached. I'm now taking sertraline and propanalol but I'm feeling dizzy quite often and had another attack today at work. I know it sounds ridiculous but I just keep thinking what if this isn't anxiety and I'm actually seriously ill? I don't suffer from typical panic attacks. I don't hyperventilate just feel as though I am going to pass out in blind terror. Any support would be welcome.