What is going on here..Warning (TMI)

Berry
I found out I was pregnant on the 19th of December period was meant to be around this time...not so sure coz this was gonna be my very first cycle after previous miscarriage in late October. Nway I started bleeding as soon as I found out I was pregnant again went to my Dr my levels were low but slowly rising-:( nway long story short this pregnancy ended up in another miscarriage. I am still waiting for my period to show up but for the past few days I have been experiencing some very dark brown almost black stringy mucous when I wipe..I am freaking out I never experienced any of this its been almost 2 weeks after my miscarriage. I was entering my 6th week when I miscarried.