What does this mean?

As
My doctor told me at my last appointment I'm measuring a week later then I am. So yesterday I turned 22 weeks & today I'm 22 weeks & 1 day so according to the doctor I'm really 23 weeks & 2 days as of today if on Friday she measured me saying I was 23 weeks so what does this mean? Baby will come early or baby is actually already over a pound and could be born early?