burning pain/left leg my 2 year old daughter was sitting on my lap when suddenly my left leg (from my hip to my knee) started burning and became very painful, my left foot feels very heavy, my left knee is throbbing, and I keep getting twitches towards my knee, also I noticed my ankle is hurting too. I m not sure if I need to go to be seen or not. I m only 23 years old and very concerned, its causing me to panic.