Bfp??

Laura • Married 30/8/14, little boy lochlan
I have taken different tests, yesterday I did a clear blue digital and got pregnant 1-2 weeks and I've don a first response and a cheap one. I was at the doctors today and they did a tribe test which was negative. I'm due my period on Monday so it's still very early but I can clearly see lines and these tests but the doctor one was negative?? I'm so confused!!