We all will probably experience "big T" and "little t" trauma at some point in our lives. Most of us have not been trained in the symptoms that are to be expected after exposure to trauma or what to do to take care of ourselves or loved ones. The following are some resources that may be helpful to you in dealing with trauma.
Trauma information and hotline: https://www.psychguides.com/guides/ptsd-hotline/
Coping with traumatic events: https://www.nimh.nih.gov/health/topics/coping-with-traumatic-events/index.shtml
Self-care after trauma or a disaster: https://ucc.nd.edu/self-help/disaster-trauma/taking-care-of-yourself/