Ok. Maybe by investigating why you feel more comfortable at those times, to think there is nothing after this life, this would help you formulate your beliefs.

Agnosticism allows for the existence of something, but doesn't clarify what it is, if it's there

Atheism states quite finally, there is no god. You don't sound quite so sure, as evidence by the spiritual moving you had even watching Touched by an Angel?

People can be moved by many things, beautiful sunsets and the like... what you root those feelings into is the core of your beliefs I think.