I have clubbed fingers, my family does not have them.i have had blood test, chest xray, heart scan, lung breathing test, but were ok. what now?

Is it new?: If the clubbing is not new, i would ignore it. Some folks are born with it. If it has developed recently, a good history and physical is in order; if you are ill, it will probably show itself. Be sure this is also real clubbing; iron deficiency can change nails and various situations can cause pseudo-clubbing. "treat the person, not the sign." good luck.