Mirena
"When they tell you Mirena can cause irregular periods, they're not joking. I had read a review that someone wrote saying they ruined every pair of underwear that wasn't black, & they definitely were not joking either! Before Mirena I had very heavy periods, I mean super plus in 3 hours on day 1. Mirena has lightened that tremendously! Although in the past 2 months, something has gone haywire! Last month, I had a 3 WEEK LONG PERIOD. It would stop for one day, then kick start as if it's day 1 and on all over again. I am currently on my second week this month, so I called & asked what I can do. They said there's nothing! It is a hormone, so it effects everyone differently. Otherwise, I'm not pregnant, & my 3 wk periods are lighter!"