Lila, Don't worry about moving to your son's town. ANY medical facility can handle the Warfarin test, They did mine at the doctor's office - there's a little machine, like diabetics use - they just ★★★★★ your finger and put a drop on the machine - the nurse does it. The doctor can also prescribe one of the machines for home use and medicare will pay for it. It's not a problem.
There is an a-fib support group at the following link. I urge you to join that forum - they will keep you up to date and help you get through it.
http://www.dailystrength.org/c/Atria...ion_AFib/forum
Jack