have been having serious pain in my elbow. well the place where you get your blood drawn actually. I cannot straighten my arm no mater how hard I try. jysically will not straighten! unbearable pain when I try to force it. motly feels like getting stabbed with needles but when I try to straighten my arm it feels like a bruise. what is wrong with me and what can I do to fix it. been month now and gets worse everyday it seems