Now, Missy, why aren't you in bed resting? You aren't going to get well or accomplish anything at work or home if you're running on fumes. Try to rest, really. Don't want you winding up in the hospital or something.
If you're too sick to go tonight, I still don't see why that would equate to not going the other two nights?
I'm big on responsibility and if I gave notice and am supposed to work until a certain date, then I'm working until that date. I think you should go rest now and go to work, provided...