How far along in pregnancy if your hcg quant is 575?

Very Early: Very early, usually 3-4 days after implantation of the embryo into the uterine wall. This is highly variable. In an early healthy pregnancy, the HCG should double every 1.5-2 days.

Very early: You should consult the laboratory scale. 575 sounds very little to me so very very early ( few days?)if there is pregnancy. Check what our ob/gyn have to say.