I'm so confused! HALP!

La

Ok so earlier this month I went in for a consult to terminate (don't judge my choices when you dont know the facts as to why) and when they did an US I was measuring 4 days (13&6 at the time) ahead of the the EDD (which would bring me to 13&2)

NOW my question is, if I wanted to know how far along I am

Which do I go by?

The EDD from my LMP?

Or

What fetus is measuring at now?