(coldness, numbing sensation, color change??) Pain in
the calf is usually the first sign of a serious blood clot, (many blood clots form in
this area) but that doesnt nessecarily mean it is a clot or it isnt, theres no way to know without further testing. I know it may not seem financially smart right now to see a doctor, but just having a blood clot period is potentially life threatning, let alone once it causes one of the problems i stated above..