I am 19, and between 13-15 weeks pregnant. It's been going great until a couple days ago i started spotting brown, and now two days later, (after i thought it was slowing down) after going for a walk, it's now a rusty red color and a bit heavier. I never had any implantation bleeding and this is around the time my period would have been due for this month. i have cramping but i've had that since day one, and they just feel like menstrual cramps. What are the chances of this being a miscarriage, even after 12 weeks? I don't have my medical right now so i'm completely terrified and can't see a doctor at the drop of a hat :(