Ghosts, they don't exist. You're just freaking yourself out.
Houses make noise (at night), especially old wooden ones. You know, the whole wood expanding/contracting from temperature changes and all. Warm day you say? Not as warm as it was when it was sunny out. The temperature is likely dropping as it usually does from day to night by 20 or so degrees.
Choking while you wake up? Yeah, you're stressing yourself out. It's gonna happen.