Last night I had a dream that i died, what does it mean?

The dream basically was a building getting blown up with me in it. But the weird part is that i was still walkin around like a ghost. No one could see me but my little brother. My mom was in the room and i was trying to tell my little brother to tell my mom that i will always love her. But when i started to get him to repeat me i faded away and was no longer a ghost. I also was looking for my boyfriend in my dream but never found him. So what do you guys think the dream means? Thanks