I am a new mom (8 month old son) I have breastfed my son till 7 months, I got the birth control implant (nexplanon) put in June 12, and haven't had my period at all. But now I'm expieriencing extreme cramping and bloating, I'm a bit constipated. Also I've been having this black/ dark drown blood like substance appear. I see some blood but not much. What does this mean? Am I able to fix this? Or should I go see a professional? Please help!