Etonogestrel
"I had the nexaplanon implanted 3 years ago and  getting another, and I've seen bad reviews on this. However my experience was great with it, I didn't get any heavy bleeding or periods almost immediately after insertion, some spotting not heavy and lasted for about 2 days, I didn't gain weight I lost about 30lbs with it, and my face is tremendously clear it didn't give me acne. My mood swings are maybe bad at times but nothing major, I don't have to worry about getting pregnant the chance are low. It's in my arm and it's sort of cool to show proof of birth control in your arm to your partner or whomever. It's painless when inserted however I did bruise for 3 days but it wasn't too bad "