BFP but bleeding.... is this a no goer?

I had 2, 2 day frozen embryos transferred 9 days ago, so am now the equivelant of 11dpo. Yesterday and today I have had a positive pregnancy test. But I've been bleeding lightly, on and off for 4 days now. I'be never bled between cycles before. Sorry for TMI but the blood varies from pinky brown colour to practically black. Is there any hope for pregnancy here?