Birth Control
"I got this implant 3 1/2 months after having my first child. I had lost nearly all my baby weight and was continuously losing, that is until I had this put in. I have gained 25 lbs and no matter what can not lose it. Also my face started to break out around a month after getting the implant and just keeps getting worse. The worst side effect is I spot at least 25 days a month, sometimes I will bleed up to 3 months straight, stop for 2 or 3 days then start bleeding again. I have also noticed a rapid decrease in sex drive and in the last 6 months less sensitive and I have a very hard time getting turned on,  which is probably the cause of the lack of sensitivity. 
I had implanon for 3 years and loved it but I hate nexplanon."