1) Is amniocentesis offered for every pregnancy? Or is it only offered for patients who have genetic defects in their family history? 2) How many weeks old is it possible to obtain gender from ultrasound? 3) Ob/gyn doc measured the length of the fetus. Was she doing this just to keep records, or was she using this to calculate somehting? (due date, conception date, etc). 4) What are the dangers of taking a newborn infant on an airplane? Can normal sucking do enough to avoid ear problems during takeoff/landing? Or would that be too much for an infant to handle? 5) Whats the immune system status of a newborn infant? Is it so poor that they can barely ward off routine germs? What are the chances that a newborn infant would acquire infection from an airplane trip, and is there significant mortality involved? 6) What OTC meds are contraindicated in pregnancy? 7) What are the statistics involved regarding due dates? I'd like to know the mean and standard deviation for births relative to their due dates. For example, what percent of births are born within 1 week of their due date? 90%, 75%, 60%?