((((( sweetie )))))
First and foremost, take care of you.
Step back and make a list of must do's. Don't sweat the small things, let the dust stay where it is. In the grand scheme of things what's the worst thing that will happen? They might whisper you have dust. So what.
Second, don't be mad at yourself about the MRI. It happened to me. I freaked. Enclosed places are not my thing. Not for five seconds or two hours.
I went throught the Yellow Pages until I found a place that had a sit-up MRI. It was perfect. Loud, yup. But not enclosed.
Hang in there. I'll be sending cleaning vibes your way.