It is absolutely essential for you to be on anti-coagulant medications that will prevent further clot
formation. Different types of medications are now available - Acitrom
is one of those. If you are taking this then you should ensure that your INR is maintained in the range as prescribed by your doctor for the medicine to be effective. You should take warfarin
diet. And donot remain immbolized for a long time, in long duration air flight wear stocking and keep moving your legs and toes. There are better medicines available as well which donot need INR testing and have lesser risk of causing bleeding
but are slightly expensive than acitrom, you can discuss with your treating doctor regarding that.