birth control
"I have had nexplanon for about a year and a half now, the first six months I spotted off and on and was a little moody. Have had a bit of weight gain but I couldn't say for sure if it has been from the birth control haha I didn't have any issues with implantation, healing, or the effectiveness so far. I intend to get another one out in after the three years are up.  However I never plan on having children. But I haven't had any issues or scares at all. I've loved it. My periods have gone away completely I have no more spotting. It's great"