ok shot tne on monday into my lab rat. (right thigh) shot tne into my lab rat on tue. (left thigh) since wed my right thigh has been hurting like a mother. i can't bend my knee to put my socks on. i have a hard time walking up stairs. very painful. the injection site is not red. it does stick out a little but that always happens when i do 2mls of tne. my left thigh is little sore but no prob. i don't think the batch was comtaminated since i 've been using it quite a while. i can bearly walk or sit or lay down. i wake up in the middle of the night if i move wrong onthe leg. anybody else experience this with tne. i do hear it is a painful shot but i was always able to bear it. this time i think either i injected to close to a nerve or maybe i do have an infection. like i said it is not red at all but it is very sensative to the touch.