Martial arts star Jet Li is suffering from a mystery blood disorder. The Chinese action man has baffled medics after calling on them to help him battle the crippling pain he felt after completing work on new movie FEARLESS. He feared that a stunt that went wrong and led to him and a co-star tumbling off a building had left him with severe internal injuries, but he got a clean bill of health when he visited top doctors. Li says, "There was something wrong inside. I went to the hospital and they did a lot of X-rays and checked everything. "Even today, I've got something inside, a problem. It's not the bone broken or something like that; that's easy. Something's wrong inside. I hope I'm OK."