I am 34 year old female who has no health problems to speak of. Three days ago my left leg started to feel weak and heavy. Later that same day, I started to notice cold areas on both legs and feet, like someone is pressing a cold can of cola against my skin. I contacted my pcm and was told to take 800mg ibuprofin for a few days to see if maybe my muscle was inflammed. I have been doing this for 2 days now with no noticeable difference. There is no pain.