Weight Loss During Wedding Week

Alright, so it's my wedding week. My final dress fitting is tomorrow...I know late but she canceled and needed to reschedule our appointment. At my Batchelorette Party I came down with a wicked flu and three days later, I'm still suffering symptoms, one of which is weight Loss.

Two months ago, I would have been fine with it, but now 4 days out I'm a little worried. The dress wasn't snug it seemed to fit just write so I didn't need to have it taken in, but now I've list 9LBS almost 10....

Anyone have advice? Do I need to just start eating everything sweet I see? Chugging water like it's going out of style? Sorta at a loss here, and since I still have symptoms, I'm worried my weight will keep dropping.