Those implants are hell on hormones.My ex got them and omg it was like the exorcist.I told her go have those things taken out or I will cut them out myself.
I think it was the end of the access string that came through the cervical opening. Would feel like a little pin prick now and then. Never left a mark on my tip though. Copper 7... It did what it was supposed to do with no real ill effects.