Hcg levels-how far along am i?

M

With my first daughter at 4 weeks 5 days my hcg was 847, i have no clue when my lmp was so all i have to go off of my hcg levels, do you guys think id be closer to 5 weeks? They give you such a wide range its hard to even go off of this haha, any estimations are appreciated thanks ladies ❤