memory management - C# - Do I need to worry about if data is stored in the Stack or Heap?

I've gotten used to the memory management of C++ and having to consider if data should be stored in the Stack or Heap though coming back to C#, I'm a little confused on if this should really be a concern anymore.

I'm aware that C# uses a Garbage Collector but does that mean I still need to allocate data to either the Stack or Heap? I mainly ask this considering I'm using the new keyword a lot more then I would in C++