Can you be pregnant with no hCG?

If your uterus is continuing to shed at least partially, or if you don't get your period regularly, hCG (the pregnancy hormone) may not accumulate in a way that is significant enough to give you a positive home pregnancy test.

Can you be pregnant without hCG release:-
If you test too early in your cycle or too close to the time you became pregnant, your placenta may not have had enough time to produce hCG. This would mean that you are pregnant but you got a negative test result.