Prescribed codeine, took 1 tablet yesterday morn, felt extremely nauseous, fatigued, shaking, and headache, still feel the same today without shaking?

Not vicodin. I don't think it is the vicodin because it is out of your system by now but there is something going on system wise in you body (flu, cold, virus etc) and you should contact your MD for a thorough evaluation. No worries.