my apple id is being used for imessage and facetime on a new device, but i have not setup a new device
I received, an on screen, notice that "Your Apple ID is now being used for iMessage and FaceTime on a new iPhone". However, I have not setup a new device. I logged into iCloud to check what devices were link to my account and it only showed my iPhone and iPad. What should I do?
iPhone 6s Plus, iOS 9.3