hCG levels

Hi all,

This is my first pregnancy and was hoping someone can shed some light on hcg levels?

LMP 13 March

Period expected 13 April

Positive test 14 April

First bloods 17 April, hcg at 660.

I've had more bloods done 22 April and get reaults this Thursday.

Is 660 a good level? Doc originally said i should be 4-5 weeks based of LMP, but only 3-4 gping by bloods.

ETA: bloods re done on 22 April sitting at 6000.