Hi - mine was a copper coil only, I know the marina coil is differnet due to the hormones in it. I fell pregnant very quickly each time I had it removed (3 times), after first full cycle with each one, I know everyone is different. This time around, I had it removed half way though my mnestrual cycle on Oct 1st -had AF on 13th Oct and got BFP on 5th Nov. AF on 13th Oct only lasted 24 hours (just under really) and was heavy heavy heavy (sorry TMI but had to use both super tampons and sanitary pads and was still not fully protected.)
xx