My reoccurring bad dreams

So lately I've been having these bad dreams that lead to me waking up feeling like absolute shit.  These are worse than the usual "nightmares" because they're much more realistic.  They always end up being one of the two scenarios:
1. It's the beginning of the school year.  It's not specified whether I'm in high school or college because the school halls switch back and forth between resembling the halls of Lincoln High School and the hallways of various buildings at USI.  However, the same thing happens in every dream.  I'm always unaware that I'm signed up for a certain class (it's usually English class for some reason) so I miss the first day.  When I find out that I'm enrolled to take it, I try to go the next day but I cannot find the classroom for the life of me. I circle these strange hallways passing classroom after classroom but never recognizing my teacher inside so I just keep looking.  In result of my endless search, I miss all my other classes for the day. I wake up with the worst feeling of stress and confusion and disappointment in myself.
2. The second scenario has a little more room for creativity.  It always has the same outcome but is caused by different stupid things.  What happens is, usually someone that's close to me (a friend, my mom, my sister, ect) is an absolute bitch to me for no reason. Pardon my French.  And it angers me so I stand up for myself and I'm sort of bitchy back. Then literally everyone I'm close to- all my friends from Vincennes and Evansville, my parents, my siblings, my boyfriend, my cat, my grandparents- treat me as if they've never met anyone as mean as me before.  Everyone seriously just hates me and no one will let me explain why I was initially mad.  They all leave me somewhere alone (last night I was left alone in a parking lot at night).  I wake up feeling helpless and depressed and alone and I can't explain that my mood the next day was all caused by a dream.
Essentially my terrible feelings the next day are caused by me, considering I'm the one who creatively thought up these scenarios to take place in my head while I sleep.  I just wish I knew what caused me to dream this way. I used to have interesting dreams that didn't change my mood at all whatsoever when I woke up and now it's like my dreams are controlling how I feel in real life.  If anyone reading this is a master dream interpreter or even dabbles in psychology, I'd really appreciate an answer.