It sounds like you are in self-timer mode which allows you to set up the camera to take a photo and then step into the frame. Check your manual for self timer and exit this mode. It should have options for a 2 and 10 second self timer.
Rodger
EOS 1DX M3, 1DX M2, 1DX, 5DS R, M6 Mark II, 1D M2, EOS 650 (film), many lenses, XF400 video
