My nephew died 5 months ago so I am currently experiencing grief. Let me tell you my grieving process has been all over the place. Yes I have experienced all the stages but at different times and more than once. Everyday is a new day and a new experience for me. One thing I do say that was spot on with the stages is that at first I was so numb to the situation. I was so dazed also. At one point I was scrolling through Facebook and my brother's senior picture popped up and I didn't even know who my brother was. It is just crazy what grief can do to you. Everyone should realize that you can not grieve in a wrong way.
The 5 Stages of Grief and Other Lies That Don't Help Anyone Megan Devine - http://www.huffingtonpost.com/megan-devine/stages-of-grief_b_4414077.html
Five Stages of Grief by Elisabeth Kubler Ross & David Kessler http://grief.com/the-five-stages-of-grief/