I ve noticed in the past year that sometimes when I m standing, my legs feel weak or tired and I want to sit. While laying down, both legs ache, even hurt some --usually with some movement of my legs while laying down, it relieves or stops the ache and pain. Occasionally, the ache/pain continues for a while. When I am bending over (ex. to shave legs), I notice my feet become bluish-black. I mentioned this to my internist who didn t seem concerned about it. I m a 53 yr old female, secretary--alot of sitting/typing. I m almost 20 lbs more than what the doctor says is normal for my height (5 4 ); weight approx. 158 lbs. I m concerned that there may be some blood clot or something is causing poor circulation in my legs. I do not walk as much as I used to and I haven t been exercising over the past year.