HCG levels can provide an estimate of pregnancy progress, but they vary widely between individuals. Generally, higher HCG levels indicate a more advanced pregnancy. However, it is important to note that HCG levels alone cannot accurately determine the exact gestational age or due date. Ultrasound scans are the most reliable method for determining gestational age and estimating due dates. These scans measure various factors such as fetal size and development to provide a more accurate assessment of pregnancy progress. It is recommended to consult with your healthcare provider who can interpret your HCG levels in conjunction with other factors to give you a better understanding of your pregnancy progress and estimated due date.