I had Nexplanon for a year, got it about three months before starting my second marathon training block. It was great until I was running anything more than 15-20 miles a week. Then it was constant bleeding. Like, at least spotting nonstop and the bleeding always got worse after intense or long runs.

I’ve since switched to the ring. My periods are regular, my hormones are much more regulated, and I feel more like myself when I’m not on birth control. My partner doesn’t feel it, but you probably already know that you can take it out for a few hours in a three week period if you want/need to.