Flagyl and headaches

I was prescribed this drug for C-Diff.
This is my 2nd time taking this drug for the C-Diff.
It absolutely makes me so miserable,
physically and mentally.
I feel bad all over.
It's hard to describe, you feel like
you're going to die or something.
I have an extremely bad headache.
My shoulders and hands hurt.
I ache and feel weak.

This stuff is aweful. I took 6 pills total over 3 days, and wow, headaches, burning left foot (comes and goes, mostly after up walking aroung then sitting down) Pressure in the back of my head is aweful. I haven't taken this drug for 4 days, but still have these stupid side effects. Anyone have any reassuring comments for me? Has anyone had this problem and did it go away after a while?

Have had serious side effects: pain in tingling in all extremities, severe muscle and tendon pain, join popping and pain, nausea, headaches, mental confusion, difficulty talking, walking or lifting, dizziness and lightheadedness, and everything I eat and drink tastes terrible like I'm eating metal. My doctor says he has never had a patient react with every possible severe reaction. Well, now he has...