Endometriosis and PCOS with IUD


I have both endometriosis and pcos(lucky me) Until recently u have been on the combined pill but due medical reasons (migrain and being put on betablockers) I have had to use another method on birth control. I went with the copper IUD, since having it implanted I have found my periods heavy, painful and frequent. they last 15 days or so and i only have 5-8 days between periods. has any one else had this issue??