Hi hun, try not to worry, this actually happened to another lady on this forum, I'm sure she'll respond when she's sees the topic. Doctors tests are nowhere near as sensitive as HPT's so it takes longer for them to give an accurate result.
Congrats hun xx
That was me! I did two positive home tests and then was told by the Dr that I wasn't pregnant (well the annoying receptionist actually...) I was so upset and thought I must have miscarried but did another CB digital test when I got home that night and it was still positive. I am now 11+3 so don't lose hope - they can get it wrong! xxx