Tell your doctor if you have any history of arterial or venous thrombotic diseases, deep vein thrombosis or pulmonary embolism, inherited or acquired hyper coagulopathies, cerebrovascular disease, coronary artery disease, thrombogenic valvular or thrombogenic rhythm diseases of the heart, uncontrolled hypertension, diabetes mellitus with vascular disease, migraine headaches, liver tumors or liver disease, undiagnosed abnormal uterine bleeding, Hepatitis C or cancer before starting on this birth control medication. Medication may not be suitable for women that smoke. May not be suitable for women who are older than 35. Tri Lo Sprintec side effects may be more severe for certain women.