Recurring Nightmare

So, twice in the past week I've had a nightmare that I'm back (or maybe still?) in college and I forgot to do something really important.   In the first dream, I was living in my sorority house for a third year (which would NEVER happen) and I almost forgot to go to room picks so I didn't have anywhere to live.  In my second dream, I was going to be a senior in college (again)  and I forgot to register for classes, so I was scrambling to register at the last minute.  So weird.  Also, you know how sometimes in dreams, when you wake up and think it wasn't really a dream but reality, and it takes a couple minutes to realize it was just a dream?  This happened both times.  When I woke up, I started scrambling to get things in order - it wasn't until a couple minutes later that I realized what was really happening.  

What does this all mean?!?!