pregnant and still bleeding

Jamie
Hi community! 
I just got back a positive pregnancy test
However, I had my period a week and a half ago and am still having a darker "light spotting" flow. Someone told me this is common and that I should take a pregnancy test... so I did! 
But now that I'm pregnant, I'm wondering what this means?
We have our first appointment on Friday, but that won't give me enough piece of mind until then. 
Any advice is appreciated!