I can understand what you are going through at this point.It is not easy to accept the loss. But you know ,eventually you will get over the grief.
If your emotional reactions are too much according to you , affecting your normal day to day existence, pls do seek help from a mental health professional.
Next Steps
Talking to some confidant will help you to vent out. But talking to a mental health professional will definitely help you who will take you through a bereavement counseling.