I think I'm having a allergic reaction.

Grace
My patch is on my shoulder as you can see in the picture. The rash goes all the way down the arm that it's on. And itches like crazy where my patch is located. The rash also only showed up a day or two ago. I have been using the patch for going on two months but I had to stop taking it for three weeks because I couldn't get to the store to get my Medacation. I've been using it two weeks now. What to do!