I just put on my second patch today. I put the first one on the back of my shoulder. I put the second one on my upper arm and it doesn't seem to be working as well. The pain is much greater now than with the first one. Does anyone have advice as to the best place to put the patch? Also, can you take them off and relocate them? I'm guessing that they probably won't work after that or won't stick... Thanks for everyone's help.