Nexplanon
"Insertion was virtually painless. I've had it for almost 5 months and I hardly notice it. No weight gain or loss (I was really hoping to gain weight from it since I'm very skinny). I'd assume the people complaining of weight gain probably produce a lot of eestrogen in general - but I'm not a doctor so don't take my word for it. No mood swings,  no headaches. I still get my period somewhat regularly,  however it's longer by a week or two but lighter. I hardly notice it, my period symptoms have also lightened up a bit (less pimples, less cramps, less attitude). I would recommend this to anyone."