Suicidal in the AM, Fine in the PM

So for the past few months I've been able to fall asleep but I wake up at 4:00am and lay awake til 5:00am. I fall back asleep (kinda) but from the time I get out of bed until about noon I'm VERY anxious and suicidal. I'm overwhelmed by everything. Then as if someone flipped a switch, I can feel my head relax, my sinuses open up and all of the sudden I'm fine. Its like my entire head swells or becomes inflamed during the night then like magic it dissipates. Happens pretty much every day.

I've seen 3 psychiatrists, 2 nurse practitioners, 2 general practitioners and three counselors.

They either have no clue or diagnose me as bipolar. I am not bipolar, I work with bipolar people and I don't know what I am, but that aint it.

Benzo's and SSRI's have zero effect on this. I'm currently on no medications.

Can anyone give me some insight?

Thanks in advance.