How far along am I?

Kailey
I just found out I was pregnant yesterday. My <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">pregnancy apps</a> say I'm 4w2d, but I took a pregnancy test this morning that estimated only 1-2weeks. My last period was November 7-13. 28 day cycles. My first dr appt isn't until Jan 11 so any info on how far along I am will be helpful. Thanks!