Is it possible for me to find out if someone is reading my email and who it might be? They could possibly know my password. I know I can change it, but it's tied to lots of things I do.

Unless it is someone in your home, or someone you think may have been with you and witness your password, then I don't think its possible to find out. You can spend a lot of money on spyware.

Change your passwork is the only thing I can suggest.

Then change your password and be done with the questions. In fact, it is recommended that you change your password often, just to avoid the kind of situation you think you are in right now. So what if your password is tied to many other things? Maybe it should not be tied into those things. It enhances the likelihood of being hacked.

I guess I'm just interested in who it might be.

You could hire someone to come and check your computer. Or take your computer in to one of the wise geek type places and see what they can find.