Period or implantation bleeding!???🤷🏻‍♀️

Raven • Just an okie girl crazy about an Arkansas man! ❤️🐶🐴🐮🎣🍺 & now mother of ms Blaze

Okay so my sister is “7wks late” for her period. And she took 2 at home pregnancy test that came back faint positive. She went to the dr 4days who and did a pee test and blood test that came back negative. But still show slight signs of possible pregnancy!?? Anyone have any input on this???