I had a nerve block for my neck, shoulders, arms. It has worn out. Now the pain is bck and dr diagnosed me with fibro and to take Savella. But I can hardly move and I don't know when the Savella will start working or if it wil work at all. I was hoping dr. would put me on percocet, after trying vicodin (which made me feel dead) and the darvocet (which is going to be black-labeled.) I need pain relief now. I haven't had a darvocet in 3 days.