"i have had nexplanon since february of 2015, it was great at first when i got it, no periods, no cramps, nothing. at the end of july i started spotting (which was normally when i would start a period before birth control). i just thought maybe it was just a few times a year i would have a small period. well not even 2 weeks later i had a full blown period and heavy at that. awful cramps and mood swings came with this period and it lasted longer than any period i had ever had before. after it was over another 2 weeks went by and i started my period again. this one is not that heavy but it&#039;s really annoying me and i got so used to not having one i was spoiled. i am hoping that these multiple periods in a month stop."