Hi on sitting Down a couple of days ago I thought I sat on something sharp nothing was their , since then on certain seating movements I have a real stabbing pain in my left upper back leg and now gone into my left buttocks area , when I walk it des not pain me at all or standing , I am 60 of good health I do have cervical spondylitis but it is fine and causes me no major issues , I have no swelling , please any advice .i am due to go to Australia beginning of March Kind regards Sylvia