UPDATE: added TMI photo. Never had Implantation bleeding... please help!

So I THINK my period is due tomorrow. But i had a miscarriage on the 2nd of this month. So I'm really not sure what's going on with my cycle cause I haven't been tracking it since the miscarriage. But last night I was having cramps... they felt similar to the cramps I get in the early stages of pregnancy. But I just brushed it off, figuring it was just AF coming to visit. But then this morning when it wiped, there was brown blood. Not a ton. Just on the toilet paper. Could this be implantation or just left over old blood from the miscarriage?? And if it is implantation, how soon should I be able to get a positive pregnancy test??

Update: here's a pic of it... seems a little pinkish on the right side.. sorry, I know it's tmi.