I have it on my butt cheek right now. I am on my 2nd week and I love it so far. I had it on my shoulder the first week, but my bra strap rubbed against it, and it kinda got on my nerves. I forgot that it is on when I have it on my butt. I don't mind it at all. One thing my dr. told me is that some people have an intolerance to the adhesive, but it doesn't bother me so far. Much better than having to remember to take the pill every single day. You only have to change it on your start day, mine is Sunday. Pretty easy so far, I will update after I have my next period. I was pretty reliable on the pill, start on Thursday, end on Sunday, so we will see.