(((MINIME)))
I'm sorry you had such a tough weekend.
*Try* to be gentle with yourself.
Flashbacks are draining, because all those fight/flight mechanisms are activated. On top of that I hear worry over a new responsibility.
Whatever you can do right now to care for yourself will help -- just be forgiving of yourself.
A few ideas:
Eat a juicy piece of fruit, and savor how it tastes.
Brew some herbal tea, take time to smell it and slowly sip it.
Take a bath with some candles. Just let the water support you for a while.
Put on some music and Dance around -- let your body move if it wants to.
Step outside and take a few deeeeep breathes of the air.
Find one thing, in this very moment you can notice, and just notice it.
Sending you peaceful thoughts.