i had the nexplonon(idk how to spell it). the second year i started getting my periods for two weeks a month ,i was like that for 6 months!!!! so, i took it off because i got it for a third week in a month....this happens to a small precentage of women...i still recommended it to my friends,and my friend has it and her period is 4 days a month...lol i hate her!!!!