history of blood clots in the right knee. other dvt in the past. past history, dehydration, not moving around. has over a million miles in planes. these travels, you see when you travel from here to california you can't put your shoes on. that is because the blood has to somehow get back to the heart. moving around and putting compression stockings is way to prevent these blood clots. she travel as lot. probably under a lot of stress, dehydrated, all of that resulted in this blood clot. we should wait until we get more information about the exact location of this blood clot. heather: what will the recovery be like? >> they're monitoring her blood very carefully. when you give the anti-coagulation, you want to make sure you get it into perfect zone of being blood thinning enough to resolve the blood clots. anymore than that you can cause bleeding especially with history of concussion. that would be very risky. they're monitoring her very closely to make sure we get a perfect zone for thinning her blood and she will be