im in hiding - and hope I am back on this board but am concerned...

I am bf-ing dc1 and haven't yet had my period. 10 days ago I got what I thought was my period - it wasn't very heavy but it lasted 5 days and I needed to use tampons.

today feeling off I took a hpt that came back positive Chat Icon but am obviously concerned about the bleeding from last week
should I consider the possibility that it was a miscarriage? is it possible it was implantation bleeding for so long (I had it with DC 1 but it literally was there when I wiped once and that was it)

I of course plan on calling my doctor Monday but its leaving me in limbo all weekend. anyone been through something similar?