Recently neighbor of mine passed away and the thoughts on what is next started to go through my head, It gets bad sometime that I get sick, breathing gets deep, gagging, belly pain, chest pain and I just don't want to move. These thoughts or feelings still come and go. I have notice, when I wake up until the evening hours, I have these thoughts go through my head. But then at night, the thoughts subside and I feel at peace. Then wake up and everything starts up again. Is it anxiety, depression, or grief?