Pregnancy questio

steph

Ok so I had my period on the first of November, I tested and I am pregnant; I called and I was told 6 weeks and than I checked on the <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">pregnancy app</a> and it says 4 weeks. So which one is it? How far along am I does anyone know?