Feeling Like Death Warmed Over

I was OK (kinda, sorta) with the massive allergy attacks I was getting as soon as it warmed up here and everything started blooming.  I was even OK with going through a box of Kleenex every few days.  And then yesterday, in addition to the coughing, sneezing, and watery eyes I came down with some sort of upper respiratory infection/fever/chills/no energy at all illness that has left me in bad for the last 24 hours.  Ugh.  Fingers crossed that it isn't the flu.