positive pregnancy test but bleeding 14 days?

Hey everyone. I have been trying to get pregnant for a few months now with my bf I did have a period on march 3 and then my next one started 9 days early and on the 22 of march, I have now been bleeding 14 days not horrible medium to light bleeding but have today had 3 pregnancy test come back positive. I'm not sure what to think of this bleeding or if these test a wrong. I hurd implantation bleeding but wouldn't last 14 days would it?! I have appointment for blood work in the am and I'm sure I'll hear from doctors in a few days I'd just like an outside option on what you think it could be  thank you