One of the things that made me think about feng shui for health was a comment in a book about a woman who had a really ugly light fixture over her bed that had multiple sharp points pointing down. The feng shui consultant said she knew right then she was in for female problems because of the placement of this light fixture, and sure enough the lady had had a hysterectomy, but was still having pain and doctors couldn't figure out why. She ended up getting rid of the light fixture and got a little better almost immediately and about three months later called to say she wasn't having any problems anymore.
You're not supposed to have anything with a corner pointing at your bed, be it an angle in the wall that pokes out into the room, a square nightstand, a pointed light fixture, the corner of a large piece of furniture, etc. Supposedly pointed corners that--if you drew a line from them--intersect the bed can give you problems in your body where they intersect, since that's where you spend the most time.
Magnetic streams (you know, as part of the earth's magnetic grid) in the ground under your house can also cause serious health problems, but you need a professional douser to find them and do something about them. But if you had good health before you moved into your current location, that may be part of the problem.