Coil removal

Hey! So I’m new to the app but I’m slightly concerned I had my copper coil removed on the 16.01.18... we tried almost immediately to fall pregnant (as nurse said you are fertile from removal) I was always before and during the coil on time every month.. around the 29th but 29th came nothing... still nothing... I took two tests both negative (last taken a week ago) we just keep trying whilst I’m not on but I’m worried im not ovulating properly ... any advice? Xxx