I had the marina coil inserted in December 2013, I get a period every month however even though it is light it lasts anything up to two weeks!!! Why has this not fixed itself yet or is there anything I can take to help with the bleeding. I got the marina coil as my body will not accept the pill of any type, it causes constant bleeding so doctors advised me to get this as they believe it's the extra hormones that causes my body to reject the pill.