I had the implant (Nexplanon) birth control inserted in my left arm 8 months ago. About 2 weeks after it was inserted I started to discharged black/brown blood. At all times. I no longer have a period, it has just been constant black/brown discharge for 8 months. There is no pattern it has not stopped. Although sometimes it’s heavier than other times. I have not had a period since It was inserted. I’m not sure whether to call it discharge or blood because it can be thin sometimes and leak through multiple layers, but it is very dark.