Hi Mom2nine,
I haven't been on all of the herbs you're using, but I have been using Samento. For me, it was really strong. Highering my dose was almost impossible, cause it made me herx bad almost immediatly. I can reconize all your aches, except for the shivering, never had that, I sometimes tremble, I have had shivers, but not really caused by a cold feeling, more shock-like shivering.
You should really be careful when increasing dosage, really gently explore how far you can go and step back again when you're experiencing a reaction that is too much to handle.