Thank you for all the advice. I, too, thought at first it might be just WD, but it turns out it must have been something more (couldn't keep food down yesterday). It's not the case today, but still nauseated and weak, plus it made the symptoms much worse. Need to ride it out now. As for serotonin receptors, you're right, too, Poodelbell - usually, even a slight change in the diet may worsen the symptoms.
