Age>40 year, Smoker30 due to the increased VTE risk, Hx HTN during pregnancy, BP now normal, known hyperlipidemia, First-degree relative with DVT/PE, Major surgery without prolonged immobilization, Superficial thrombophlebitis, SLE on immunosuppressive therapy or with severe thrombocytopenia, Sickle cell, Valvular heart disease, uncomplicated , non-migraine headaches, Migraine without ...