Ok so I get in the car and try to start it up and it tries to turn over but it just won't start up. But then I get back in it 20 min later and it starts right up........ What the heck???

 

Barely wants to turn over? Check battery terminals and battery?

 

well its turning over fine. it just wont start up all the way

 

Kind of basic, but it's either ignition or fuel... A ghetto way to get pointed in the right direction would be to try to start the car and crank it for a few secs. Go to the tail pipe & if it smells like raw gas, you more likely have an ignition issue rather than fuel.