I had the contraceptive implant Nexplanon inserted on April 15th, and during the month I've had it I've noticed a significant weight gain (almost 10kg, noticing stretch marks on my hips and thighs) and increased breast size and sensitivity. Do any other nexplanon users have similar "side effects"? My boyfriend isn't complaining about the boob growth, but the huge weight gain in a short time is causing severe body issues for me and I want to know I'm not alone!!