Confused!!

I found out last Monday that I was pregnant well on Thursday I started bleeding and it got heavier with tissue loss and heavy clots. After 10 miscarriages I knew what it was. well because I was so early my tests should be negative or lighter than my positive.... today I have a SIS exam took a pregnancy test just to make sure it was almost negative but instead its blazing positive. I'm so confused.....any ideas?? I just want my rainbow baby!

edit: I stopped bleeding this past tuesday with spotting wednesday.