Confusion over copper coil removal and ovulating

Cheryl

hey all, I got my copper coil out on the 11th January, with AF due on 16th. but AF hasn't came. BFN on a few tests I've taken. really confused about this as it's not a hormone coil so shouldn't affect my AF. anyone have any experience on this? Trying for our second but I fell pregnant on depo injection with my first so never had to deal with ovulation charting etc