You do need time to grieve because this is a death. Bottling up the grief won't make it go away. Take the time, don't worry about unpacking. When you feel up to it, it'll happen.
Maybe start by doing one nice thing for yourself everyday. Do you have friends where you are now? Someone you could meet for lunch?
Me 57/H 58 M36 S 2.5yrs R 12/13
Let me give up the need to know why things happen as they do. I will never know and constant wondering is constant suffering. Caroline Myss