Aw, I'm sorry you're having such a rough time. I agree that people will generally understand if you just say you aren't feeling well and want to rest. I'm actually opposite, when I feel anxious and sick I want someone w/ me. Not like a crowd or anything but one or 2 comforting people. We're all different tho. You'll be OK. These "funks" as I call them hit us all at sometime or another. You will come out ok tho!
\"As soon as you trust yourself,you will know how to live.\"
Johann Wolfgang von Goethe
\"Do not anticipate trouble, or worry about what may never happen. Keep in the sunlight.\"
Benjamin Franklin