"i had the nexplanon put in july 2014, after being on the combination birth control for almost 3 years.
i had terrible mood swings because of my body adapting to the synthetic hormones.the first 9 months i didn&#039;t get a period or any spotting. then i started randomly spotting all of the time, with unbearable cramps, which only got worse after my 1 year mark. 
i am constantly bloated, and every time i eat anything i look pregnant. i eat very well, and workout almost 5 days a week. i&#039;m 5&#039;5 and 120 lbs. i can&#039;t say i&#039;ve gained weight on the nexplanon, but i retain a lot of water especially around my stomach. i have an appt this month to get it taken out and be put back on the pill because of the spotting/cramps/bloating."