@sadaboutlife
It will take time to come to terms with it. I don’t know if you are familiar with the Kubler Ross stages of grief (actually stages in accepting your own fate really but hugely useful in understanding that your grief will have stages).
Denial -it can’t be true, behaving as though it hasn’t happened, thinking about what you might say when you see them next
Anger -outrage, it shouldn’t have happened, there must have been a mistake
Bargaining -maybe if I do this, that, the other (complain, question, pray) it might change
Despair -sorrow, sadness, crying, fatigue
Acceptance -coming to terms with your grief
It has become very clichéd and there’ll no doubt be someone along to criticise the generalisation, but as a NHS clinician, I have found it very useful in watching people come to terms with grief and moving through these stages (not necessarily in that order and sometimes cycling through 1 or 2 for a while) is remarkably universal. I also think that Anger and Bargaining are poorly acknowledged as a source of NHS complaints, despite the impact on staff.
Give yourself a breather and allow yourself to feel what you need to. Hope you have family around you.