Increasing discomfort with sleep paralys

I have been experiencing for more than a decade now. Thanks to internet which made me little more informed. Episodes frequency is not constant but happens at least once in a 2 weeks. Earlier episodes were about, not able to move body, pressure on chest, vivid hallucinations, hearing weird noises, unable to end it. Few years back it started  happening with intense pain and head  exploding feeling, and always sensation I am about to die because of this pain and unable to breathe. Post episode my head hurts with heavy head feeling. But from past few months things have  become more grim. 1. constant feeling of being dead has aggravated 2. The episodes are much darker, no vivid hallucinations, a scary blackness around. 3. The most bizarre thing is my body turning very cold and I am dead and sensation that it has become very heavy and I keep questioning whether I am alive. My question is whom should I consult? A.Neurologist because of head pain B.pyschiatrist C. Sleep therapist? Please help