Etonogestrel
"So I got Nexplanon just under a year ago. I originally got it because it was supposed to stop my period (and mine is generally on the irregular side) and because it was free with my student insurance and lasted 3 years. So my first ~2 months were terrible. I bled every day and it ranged from a regular period flow to spotting that was on the heavy side. Then for the next 6 months it was regular period timings, but they would often last longer than my previous periods had. 7-9 days instead of my usual 4-6. Now, in the last 3 months it seems to have tailed off and my period has stopped, as the product promised it would.

Now that the product is working as promised, I'm extremely happy with it. It just seems to take around a year to settle."