A blood clot is a clump of blood that has transformed from a liquid into a gel-like state. The most common place for a blood clot to occur is in the lower leg. When a clot forms inside your veins, it won't always be able to dissolve on its own. Initially, a blood clot may not sound life-threatening, but if it's left untreated and unable to dissolve naturally it can be.Blood clots can be caused by anything that prevents your blood from circulating. They most often occur in people who can't move around well, who have been immobile for a lengthy period of time, or who have had recent surgery. Signs of a blood clot in the leg will take place in the affected leg when a clot obstructs blood flow and causes inflammation. Here are 15 signs you may be experiencing a blood clot in your leg.Disclaimer: Always be sure to consult your doctor before making any medication or lifestyle changes.