Anyone else experienced this side effect?

So i (21) have had my nexplanon for almost 3 years. The first 2 years were amazing. No migraines, no periods, nothing. I was a little crazy for about 8 months after getting it, but after my hormones settled down everything was perfect. Now in year 3 I haven't stopped spotting. It's been since about June. Every day I've bled just enough to ruin my day. No full periods or anything, just light spotting. It's really taken a toll my my relationship since there's certain things we won't do if there's blood involved or if I'm spotting right as we're about to get intimate. It also causes a lot of anxiety around intimacy because of the random spotting and we cannot be spontaneous. I have an appointment to get it replaced in March. If I know it'll go back to the way it was before I want it again, if not I need to find another form of birth control. I've already been through 3 so far and the 2 before was a lot worse. Has anyone ever experienced this before?