chenoameg thinks it's a virus, and I tend to trust her gut on such things. Especially since she got it (twice, if you believe ringrose's description over hers...) long before EHF.
(Anyone else see EHF and initially try to expn it as Eddie From Ohio?)
In any case, chills, tossing and turning, dreams involving doing a dance that involves a lot of turns (and thus, a lot of flipping over in place in bed), no puking and mild "other digestive symptoms".
Unless maybe we're looking at two separate thingies?