i have been having a sensation in my foot and lower leg that started few weeks ago. it started in my foot near my ankle and felt like the blood pulsing. now i feel that same feeling in my lower leg its almost like a fluttering,pulse. no pain no swelling. also occasional sensations of heat in that leg
I would suggest being seen by a vascular surgeon. The first thing that needs to be ruled out is a deep vein thrombosis-which is a clot-though from your description seems unlikely as there is no pain or swelling. If vascular etiologies are ruled out, then consider tarsal tunnel syn Chat Doctor.  You should also see a foot and ankle specialist for confirmation.