At Advocate Illinois Masonic Medical Center, doctors say they've noticed the number of deliveries going up and expect the trend to continue through August. Between July 10 and 18, the stretch with the highest surge, the hospital had almost double the amount of deliveries each day compared with its normal average, said Dr. Melissa Dennis, vice chairwoman of obstetrics and gynecology. While she can't scientifically link the birth increase to the World Series, she said those babies' due dates could have easily fallen on July 26 — exactly 38 weeks after Game 7. An average pregnancy is 38 to 40 weeks depending on how it is measured.