A spouse or partner is your daily person. The one you tell things to first, split the bills and the parenting with, and built the next twenty years around. When they die, all of that ends on the same day, and you are the one left standing in the kitchen.
This is different from other kinds of grief, and it is worth saying why plainly. You did not only lose someone you loved. You lost your co-parent, the other name on the mortgage, the person who knew where the spare key was, and the future the two of you already planned. You also inherit their paperwork, often while you can barely read it.
There is no schedule for any of this, and no one gets to hand you one. What follows is the honest version: what makes this hard, what it does to your body, what actually helps, and where the practical and the emotional overlap.