I am 20 and have had the implant for 2 years now, started bleeding on/off for 6 weeks. Went to docs for examination as sex and tampons were agony, diagnosed with bacterial infection. Was given a 2 week course of Metronidazole. During the last 5 days of the course, i started to get a white discharge, but only around my clitoris. When i finished the course, the discharge stopped, but now i have a dark brown discharge from my vagina. Is this normal? Or do i need to get reexamined?