I need opinions...

Joy • My name is joy, currently pregnant with baby number one
Okay so I was supposed to start my period 6 days ago. So I'm 6 days late and I've taken 3 pregnancy tests and the first one was very faint and the last two were negative..... I'm usually never late and I just moved a month and a half ago so I haven't been hanging around other females. What do you guys think I should do...?