How far along am I?

My LMP was 11/4 and I ovulated 11/12. My cycles are 25 days. Would that make me 4 weeks 4 days? I know an ultrasound will be more accurate but that’s not til 12/19 And I’m curious now. My nurse says she thinks I’m over 5 weeks based on my hcg 3 days ago which was 4,825 but I can’t be 5 weeks already if my period was11/4 can I? Thoughts anyone? Thanks.