i killed my friend

i dreamt that i killed a girl that i know, she’s the same age as me, i don’t know her a lot but anyways in the dream after i killed her i was trying to get away with it and no one knew i did it and i regretted it so much. the police were looking for the murderer and in the end i saw my face on the tv in the news and they were saying that i was a suspect and then i was taken and i woke up and it felt really real. what does this mean?