I recently started sitting up in bed and yelling "Mom, Mom" or for my boyfriend that died recently "Pat". I am aware of this when it happens but why?

Why at my age would I tell for my deceased Mom and my boyfriend and protector Pat? I've never done this before. I am up on my knees in bed shouting out for them. I hear myself doing it. Last night I got on my knees and yelled out "I think so, what do you think"? I remember doing it, I remember hearing myself doing it. All the internet said was people with Post Traumatic Stress Disorder do that. Maybe the shock of my boyfriend triggered this?
I recently started sitting up in bed and yelling "Mom, Mom" or for my boyfriend that died recently "Pat". I am aware of this when it happens but why?
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