Hi, I Am A 53 Year Old Male With No

Hi, I am a 53 year old male with no health issues that I am aware of. No medications. New job involves lots of world travel, sitting in cramped positions for many hours at a time, both during travel and at work. For the last year and a half, I have been having numbness in my upper (front) thighs when Ilay down. Four days ago then numbness did not disappear when I got up, and has turned to a burning sensation which is starting to worry me.