I disagree a little with what has been posted so far.
What has happened to you is that you have soaked your body in Cortisol for a very long time. The cortisol hormone regulates the fight or flight response. Prolonged exposure to cortisol leads to some very nasty things happening.
For the longest time exercise was viewed as the ultimate cortisol solving solution, but it turns out that it is not true. When your body is running on fumes the last thing you want is to add exercise-fuel to the fire.
Modern research indicates that there are some things that have a positive effect on cortisol levels:
1. Don't exercise. Take walks, nice quiet leisurely walks. Preferably in forests or other green areas. But getting out in nature actually really helps. Research indicates that looking green plants actually does something to our bodies, the primitive primate mind remembers the safety of the trees and the ample food of lush areas.
And take as many walks as you like..
2. Eat healthy foods if possible. Skip the coffee, colas and other stimulants. Also quit any drugs or alcohol. They will all make it worse.
3. Try to improve your sleep. Turn off lights 30 minutes before bedtime. Make your bedroom dark and with no distractions. Turn off computers, phones, tv's about 30 minutes before you go to sleep. Give your body time to calm down and produce the melatonin you need to go to sleep.
4. Mindfulness meditation has been shown to do a lot of good. If you can manage that on top of 1-3 it will help. Guided audio meditations are available on iTunes, youtube anywhere. Pick one that you feel comfortable with. Again research shows a remarkable change in brain activity during these meditations
With only 14 days of "healing"-time this is what I would do. I might add that I live with a doctor who has a lot of experience working with burnt out people, so this is not taken from thin air. I would prioritize steps 1-3 and optionally 4.
Optimally you need at least 6 weeks to completely recover to the point of being able to exercise again. But you can go a long way in 14 days and hopefully set a pattern you can continue in your new job.
Good luck