grinding my gears

HELP ME! My wife is getting on my nerves. I'm working all day. She hears I'm on the phone and will come in the room, talking as if I'm not on the phone.
Today, she came back emptied out groceries and made coffee - GRINDING BEANS!
I am going to lose my mind. We have a one bedroom apt. Can I work out on the terrace? Can I work at the park? can I go to my office? I'll be alone. I adore her, but this is taking marriage to a whole new test.