Dreams about atomic warfare and interventions

I don't normally remember dreams, so this is wierd. I had a dream last night, or i guess early this morning, that I was with two other people, a guy and a girl, and we suddenly became aware that a bomb would wipe out the population of the world. The earth shook, and we were somehow safe because we were in some building. We looked outside and there was not a soul. We talked amongst ourselves, and I considered the possibility of repopulating the earth with the girl I was with. This was all however, very heavy, and I was in pure shock, and it felt totally real. Then some people walked out of a high school near by, and I realized that a bomb hadn't even come in the first place, yet I still felt shooken up. What the hell could this mean?

A dream after this one:

I was with my parents and an old friend who i don't normally see and his mom, both who i've known my whole life. I was acting like sort of a prick and an intervention started for me. My friends mom, who in real life can be a bit prickly and judgemental, said that I had "plastic menacity", whatever that might mean. I stormed off, really offended, and retreated to in my home, and as i walked up i watched sharks in my lake start eating fish through the window. I live on a lake, and the sharks seemed completely normal to me, even though they don't live anywhere near my lake. I then woke. What the hell could this mean?