How can i tell if i have blood clots in the legs, how can i tell?

Ultrasound: The classic symptoms of a blood clot in the legs are pain and swelling. It is possible, though, to have a blood clot and not know it. The best way to know for sure whether you have a blood clot or not is to have any venous ultrasound. If your are worried that you might have a blood clot, you should get it checked out right away.

Swelling in the leg: Swelling is common sign as can be pain and redness. Occasionally one can feel the clots in the veins, but far more common is for very few symptoms to be present. Swelling would be the most common. Risk factors could include recent surgery or a long trip or chronic disease such as heart failure.