"i have been on nexplanon for little over 3 years. when i first had it inserted, i didn&#039;t have my period for 2 months. by the 3rd month i have very faint spotted bleeding. i did get a big nauseated, and had headaches. by the 4th month  i had a really heavy flow that lasted 2 weeks straight after the two weeks it lightened up over 3 days to nothing. from there i was fine, no cramps, no bleeding for 3 months. by then, it would be marked as my 7th month since the implant. i bled for a solid 12 days. and they felt like the worst cramps ever. i literally just stayed in bed for the first 7 days and as 3 weeks before bleeding,  i experienced period cramps. since then my period was consistent. it came every 3 months and last a little over a week."