So after being on BC for several years, I'm now off and my periods have restarted. I'm going into my 4th period after having my mirena out. I used to have 28 day cycles, as regular as clockwork, but I have had a 28 day cycle one month, then 30 the next, then 28, and this cycle looks like it's going to be 30 too (it's CD30 today, and no sign of AF). Anyone else have this?