birth control
"I decided to try out Nexplanon...even with all the bad reviews.  The first month was the worst.  I never had such a horrible menstrual cycle in my life, lasted the entire month.  Finally, it quit and I still haven't had a period since (so far 4 months).  No spotting at all.  The only problem that I have now is acne.  I always had a clear face but now I have a bunch of blemishes.  I have noticed a change in my moods but its much like the swings you have on birth control pills.  Frankly, I'm way more stable on birth control than I am when I'm not on birth control so it has helped.  Otherwise, I didn't have any other side effects."