Dream interpretation usually takes much more than 10 minutes. I don't know who was acting like they were going to be able to interpret your dream. Since I've worked with dozens of dreams about deceased loved-ones, especially husbands, I'd like to work on your dream with you.
Your dream probably is focused on the unfinished business of your argument on the morning of his death. Dreams are usually surprising in some ways, especially because if we pay good attention to every detail in the dream it will point us towards some new understanding of our situation that we could not have had without the creative drama that is the dream. So it is important that you write down as much detail as you can remember of the dream. Like, where were you and your husband in the dream? How did he show his anger toward you? and were you showing anger towards him too? Were there any words of gestures in that scene? Were there any scenes before or after the one with anger? How was the anger scene in your dream DIFFERENT from the argument you were having before your husband went to work that morning?
What did you do, or want to do in the dream? How did you feel when you woke up? What was/were the most surprising-or-shocking moment(s) in the dream?
It would be normal for me to guess that you could feel guilty that you hadn't resolved your argument, or exchanged words or gestures of forgiveness & reconciliation before his unexpected death. But I don't want to assume anything until I know as much as possible about what you saw, heart, thought, and felt in the dream itself, and how that compares to what you've thought and felt in your waking life. For it is partially the symbolism of the dream (which can be surprisingly unrealistic) and partially the differences between the dream reality and your waking reality about your husband, yourself and your relationship that may offer us keys to insight from a higher source that could provide great help for your process of grief that has just begun. For the Higher Source that composes and directs our dreams doesn't just show us what we already know, but also points to new information to help us move forward. Dreams are exceptionally supportive during grieving, even if they don't seem so on the surface.
So please answer as many of my questions as you're willing to, and add anything else that comes to mind. I don't limit the time I'll spend working on a dream--especially when it could provide both comfort and encouragement to a woman in your circumstances for the road forward from here.