Determining the progress of pregnancy can be challenging when the exact duration is unknown. However, there are a few methods that can help estimate how far along you might be. One way is to track your menstrual cycle and calculate your expected due date based on the first day of your last period. Another option is to schedule an ultrasound, which can provide more accurate information about fetal development and gestational age. Additionally, paying attention to physical changes such as breast tenderness, morning sickness, or feeling fetal movements can also give you some indication of how far along you might be. It's important to consult with a healthcare provider for proper evaluation and guidance throughout your pregnancy journey.