I'm pretty sure I have a blood clot in my arm.. I have a huge bruise just above my elbow, below my bicep, on the inside of my arm... I've had it for days.. don't know how I got it.. And there is a little ball in there that you can roll around... The only thing I can think, is that it is a blood clot from the mystery bruise.. I am flying across the country tomorrow morning.. Do you think flying would be dangerous with a blood clot??? Any quick answers would be greatly appreciated.. Thanks!!