I've been on the pods for a little over a month. I had been wearing them on my arms with no problem. I decided to wear one on my abdomen, just to get a feel for it. Everything was fine until I had to change the pod last night. When I took it off, there are these red, itchy, sore welts where it was stuck on. What can I put on them to ease the itching and the pain? Is this an allergic reaction?