What psychological condition can cause the feeling your home is foreign and you are unsafe, confused, emotionless or crying uncontrollably?

In April I lost my mother and within a week or so I bottled and moved on. Fast forward to 3 weeks ago I went on hurricane relief with my work place and worked very long hours and started waking up feeling like dreadfully alone and significantly more anxious than normal. My anxiety kept ramping up until I got home, but I wasn't right. 

My anxiety continued and Friday before last my counselor asked me if I have any flashbacks and I said I did of when my mother took her last breathe and ran out of the house. I started crying and all Saturday I wanted to cry. Sunday I wanted to cry as well, but I felt awful. Then Sunday after a long shift I wept uncontrollably and became confused and felt unsafe for even existing. 

The following morning before admitting myself to the psych department at my local hospital I woke up to feeling like my room was foreign and I wanted to run out of my house. What could this be? PTSD or?