Kaz I tested -ve at the Drs but +ve at home when I was PG with Angus. I waited a week and went back after more +ve home tests and the Dr was still doubtful as it took a long time for the cross line to come up. I didn't know I could ask for a blood test but that was pre BB days and less learned back then lol.
I'd had no bleeding though. Hopefully yours may be an implantation bleed

If you're having trouble with Dr's I have a great one in Berwick that i love. PM me if you like