Help warning tmi

Ive been on the implant about 7 months now so i cant be prego. and for the first time ever ive experienced a weird dark brown discharge the past 3 days. Almost black its so dark. Befire thisbi had pink spotting then light drown. But now its really dark. Again never had this happen before. And now when i pee there are tiny spects of tissue it looks like. Again never happen before.