if you have been living with the blood clot for some time without pain and difficulty in walking etc. than it should theoretically be of no consequence...taking a daily aspirin or other blood thinners should help...if you want to see the exact position of the clot than you should go for an angiography...most clots can be removed and a stent put in place...a clot could be in the corner of an artery and thus be sidelined...