When i cross my legs or if i sit on one leg for while i get this searing almost intolerable pain in my thighs .. Also, when i am seated for while and i abruptly stand up i get really dizzy and nearly faint ..

Does this sound familiar to anyone?

It sounds (to me, and I'm not a doctor) like you're having circulation issues. I recommend NOT crossing your legs or sitting on one leg for a while. I also think you should report these symptoms to a doctor ASAP. Searing pain in your leg could be a blood clot. Couple it with the dizziness and I'm having deja vu to when I was diagnosed with a blood clot in my leg last year.

If the doctor rules out a blood clot, then you need to do something to keep your blood pumping well. So, basically 30 minutes of cardio a day. When my pulmonary doc took me off coumadin, he told me that 30 minutes a day of cardio/blood pumping activity was a requirement to prevent future clots.

Other preventive measures include not sitting for more than 30 minutes at a time. Get up, stretch, walk around, even if it's only for 10 seconds. Never drive more than an hour without stopping to walk for a minute. I literally will stop, walk a couple of times around my car and get back on the road. I make sure I stay hydrated, which helps keep your blood flowing well, and I try to maintain my eating schedule so that I don't have hypoglycemia issues.

Good luck, but please call your doctor. If this is a blood clot, it can kill you fast and with NO warning.