How long did it take for you to get your bfp

Tiffany
I haven't had AF since January 12th, have blue-ish veins on chest, nipples, underarms,arms,legs, had implantation bleeding a couple weeks ago. According to a pregnancy tracker I'd be 8 weeks and 3 days if I am pregnant. But. So far all hpt have been a bfn. How long did it take for you to get your positive?