hcg levels in blood test need help!!

Cristie • God Is Good 🕆 have a beautiful baby girl that is 5 years old and a handsome baby boy that is 2 & 3rd on the way ♡ and have an amazing partner 🕆interracial family ♡ insta: Cristie_leilani

can anybody tell me there hcg levels in really early pregnancy talking about 1 2 or 3 weeks really worried mine are low and this doctor of mine is worring me he doesnt seem to know much :(