Southpaw, your nurse is trying to cover her behind. Your arm is black and blue because whoever is sticking you, he or she is sticking you too deep. Your nurse should know that. Try to get a tech who has long term experience. Ask some patients who been there a long time who is the best sticker and you will see the different. Also, you should start to feel better in about 3-4 months. Feel betterCDW