While using my mouse, it will all of a sudden take off and might run to calendar or/and trash. It opened calendar, then went down and opened trash up several times. It started out just doing it once in awhile with opening something and I didn't move it there. It did on it's own. Is someone controlling my computer? That's how it acts.

I would like to get this straighted out. If it is my mouse just going berserk then I will install a new one. If it is something else, I'd like to know what could be causing it. I have my security set so no one can access my computer. Please can anyone help?