Exhausted!

Erica
I feel like I'm in a body of a 90 year old woman! 0 energy, I get winded from walking to the bathroom, I feel like I'm going to pass out after simple things like doing dishes ... Any solutions or ideas? When does this pass? I go back to work in 2 weeks and I have no idea how I will be able to teach 120 high schoolers with this fatigue! Help :(