There is another thread running with lots of information. Basically you can get your class 2 medical back
You might also wish to discuss changing from warfarin to one of the newer anticoagulants with your specialist to save the need for testing in relation to flying
However you will probably need to provide the CAA with considerable data I suspect. Even if your INR is perfect there is an increased risk if you have had a pulmonary embolus in the past
Good luck