I was diagnolised with a Blood Clot to my Right Lung. The Doctors are stumped because Im 51 year old Female. They asked me IF Anyone in my family has ever had Blood CLots. They did a D Diamonder Test and it came up negative for Blood CLot. Finally they did a CT Scan which showed it to be positive. 13 days in hospital, Im still having trouble. They have done every blood test avail and still not sure why Im not feeling better. Can anyone help.