negative blood test, but positive home test ??

Mia
A couple weeks or so ago (maybe a week lol) I took a blood pregnancy test and it was beyond negative and just yesterday I took a home pregnancy test and it was positive like the lines were really dark, I had brown spotting the day of my expected period and my boobs are sore, I'm really tired, I've been having slight cramps nothing bad ! And I had a lot of white sticky discharge yesterday .