... the past few days ive started feeling my legs (mostly around my knees) feeling cold and sweating with a little pain. But today they feel way more stiff and were a lot more painful. It says if their js joint pain and stiffness to contact doctor immediatly. But since its a friday night i cant talk to my doctor until monday. Is this going to be a serious condition or is it a side effect that will go away? Have anyone had this problem? Did it go away? What should i do? Should i worry or is it not that serious?