I woke up from a nightmare about 5 minutes ago, please help! (long, sorry)?

I'm not sure exactly what it all means but it sounds like a Psychic or message dream which is supposed to mean your sub conscious is sending a message to your conscious and they usually have a particular thing em-phased on (which is like the chalk board). Being chased in a dream often comes from anxiety, feeling stressed and wanting to escape from something. Nightmares can be to do with negative thoughts or negative energy which can come from people speaking negatively around you or to you. Try to think of what caused this nightmare maybe you've been stressed lately or something. I hope this helped ( :