"i first got the implant when it was called implanon from 02/2012-02/2015. that experience was great. hardly any periods. did gain weight, but i didn&#039;t really care because i have horrible, long, painful periods. anyway, i got in replaced and my obgyn told me that nexplanon was the new name and &quot;a little different&quot;.  my periods came back and with a vengeance. i have constant weeks of excruciating cramping with maybe 2 day breaks in between. it drives my boyfriend insane, of course. i&#039;m debating on taking it out, but it has kept me from getting pregnant. literally the only perk."