I've been on the implant for over a year and haven't had a period in 10 months. Now I've been having a very light period for 2 weeks. It varies in color from pink, brown and light red. My boobs seem to be getting bigger and are very sore. I've been getting lower abdominal pain and cramps. Occasional nausea and loss of appetite. I want to know if anyone else has experienced this and if they found the cause??