Dark brown discharge!!!

Esperanza • Theatre is my passion 🎭 I'm in a happy monogamous relationship. Just here to look for advice on love and my body 😊

So I've been on Nexplanon for almost two years now and I recently started my period. I stopped getting my period about a year into having the implant and now that I started it, it lasted very short but now I have dark brown discharge that has been occurring for a week now. It really irritates me because idk why it won't go away. My discharge does not have an odor or have an odd texture, it's just dark brown. What does this mean? Please let me know if you've experienced this and found out why or how to get rid of it!!