Oh, hey, to be annoying I have a third point to make.
Maybe try changing your sleeping habits/behaviours. In cognitive therapy you are encouraged to:
1. Don't do anything in your bed other than sleep (or, well, you have a fiance, but you catch my drift

). Meaning no watching tv, no eating, no reading, ect.
2. Have a bed time ritual. About 30min before bedtime (try to make it a regular time) turn down the lights, turn down your bed, make the room a good temp., get in comfy jammies, brush your teeth, wash your face, ect.
3. Have maybe music or a white noise machine/sound machine (like the ocean) to help you sleep. I have conditioned myself to get sleepy when I turn my sound machine on, and while it doesn't hypnotize me into sleep, it does relax me a bit. Also, this way if you are a light sleeper, little house noises, pops and creaks won't wake you as easily because of that whirring blocking out those sounds.
Just some suggestions (from one who has been in therapy for a long time and a psych grad to boot!)