Left eyelid droop and left arm and leg pain.....?

my left eyelid is seems to be drooped, its fine in morning but gradually goes down as the day progress whenever i take rest it becomes normal and also i am feeling pain in my left arm and leg muscle same for this the pain goes off when i take rest.......now i am feeling little pain in my left eye some time get dull headache on left side of temple.....i checked with doctors but they all say there is nothing to worry about its because of tension and anxiety no mri and ct done.....please help ?????