I Had An Attempted Blood Draw Last Friday...I Say Attempted

I had an attempted blood draw last Friday...I say attempted because I am a hard stick, I have failed multiple IV sites in hours, up to 8 sites...I have also been told I have a lot of small valves or road blocks as the nurses like to call them for me. The technician hit something, I nearly jumped out of my skin. She could not get a flash out of the vein, so she moved over to the other arm. Well, since then I have felt a clicking and pulling sensation in my left arm and it has moved from inside my elbow down to mid forearm. It is an odd feeling...sometimes painful...sometimes it feels like it's snapping...but I don't know what "it" is...help.