Calculate Conception Date: Estimating EDC with Gestational Age

To calculate the approximate date of conception (EDC) based on the last menstrual period (LMP) and the estimated gestational age of 24 weeks on March 28th, we can use the following formula:

EDC = LMP + (gestational age - 14 days)

Since the LMP is unknown, we can use the estimated gestational age of 24 weeks to calculate the approximate range of possible dates of conception. Assuming a normal menstrual cycle of 28 days, we can calculate the EDC as follows:

EDC = March 28th - (24 weeks * 7 days/week) + 14 days

EDC = March 28th - (168 days) + 14 days

EDC = March 28th - 154 days

EDC = October 11th

Therefore, the approximate date of conception would be around October 11th. However, it's important to note that this is an estimation based on an average menstrual cycle and may vary depending on the individual.