Dreams about stuff

ok, I've been having constant dreams about the same 3 subjects, can someone please tell me wut these dreams mean?
1. I always dream about going to the store with my mom and my aunt, 2 people that I haven't seen yet this year=(
I always try to buy...

stuff, but somehow, when I go to the register and get my stuff ringed up, I never get past that part in my dream or I know I dont have any money, but I cant stop myself from taking things off the shelves

2.I dream that I am driving my dad's car (I am too young to drive, but I am looking forward 2 learning) and no matter wut I do, (I know, in real life how a car works and how to steer in and stuff, )but in the dreams, the controls dont work, so I press the break and the car keeps going or I try to park and I run off the road. also I once ran over this woman and I couldn't stop the car. I heard her scream, but no matter wut I did, I couln't stop

3.I dream about classmates. about like going to school with and classes and stuff, does this mean anthing specifically?

I knw what you mean. I've been having dreams about my ex boyfriend for months, and all. I don't know what it means, but I knw how you feel