Ok--I'm on just my 3rd pod since starting this a week ago. When I went thru training it was suggested to move sites around. I started on the back of my arm, went to the other arm but then to my stomach area and not liking that as much. Just curious from those of you that have been doing this much longer. Can you go back and fourth from one arm to the other? Does is get sore or iratated if you don't give it enough time between site rotation? Wondering what others do if how they rotate. Thanks!