I took even the urine's hospital test yesterday and it came negavtive, but I have some the pregnancy signs
(very gassy lately, implantation bleeding, boobs starting to fell tender, morning sickness). And on top of it, I'm 9 days past due.
However, I read other women stories on this site: https://www.medtrackalert.com
One lady said that she did get negative tests (even blood test) until she was 12 weeks.