I would also suggest seeking medical assistance. My first time detoxing, I tried to taper, with bad results. I saw my doctor, who was very sympathetic and caring. My heart was palpitating like mad, I had severe, debilitating panic attacks, and my blood pressure was 191/?? (sorry, I forget the bottom number at the moment; it was dangerously high). And that was with already being on two blood pressure medications.
She put me on two short term medications to get me through it, and I had a couple follow-up appointments over the next few days and weeks. Please, if you feel in any danger, don't hesitate to seek medical assistance. I honestly thought I might be dying. Maybe I was, maybe I wasn't. Whatever the case, proper medical assistance gave me peace of mind that I would survive.
Please don't take unnecessary chances.