I think it would be a good idea to talk to your Dr. right away. How long have you been on Warfarin? And how often do you get your INR checked? It might be erratic.
No Jerry, I had nothing like that happen, I do however have a large bruise where the seatbelt goes and I knew thats what it was, just no explantion for the belly one its right at the bellybutton and there's a lump under it,its about the size of a hardball............... ;'(
Did you undergo a sudden deceleration (stop) while riding in a car?
A anticoagulant like warfarin can case unusual bleeding/bruising, but if that happens one needs to discuss the causes with their doctor. If you were in a traffic accident and that caused the bruises it seems wise to me to seek medical evaluation - perhaps the emergency room in a hospital.