one thing more, I feel only the warmth, I have no pain, no swelling or redness
Many Thanks, I will visit a doctor. but I noticed that when I stand the heat goes a way, is this normal and still we are talking about a blood clot
My recommendation is for you to talk with your doctor about getting an ultrasound done of your leg. The only reason that I mentioned this is because you have been sitting in a office for 17 years and people that sit for long periods of time can get blood clots in their legs.
Some of the symptoms of a clot are swelling, warmth in area, redness, and pain. Please keep in mind that this is only my recommendation and in by no means am I saying you do have one.