Don't beat yourself up. Everything gets out of whack when you get sick. That was yesterday. Make a new start today and I'll guarantee you will drop that weight again.
I doubt you were exercising, and that is as should be. I am betting on you. I've been on SP for quite awhile and have seen it all. I too haven a tendency to try to make myself feel better with food. Liquids are good if you are running a fever. So chin up
!! I hope you start to feel better soon.