I can definitely understand your hesitation about too many tests and scans. There's a big push here to ban the 3d ultrasounds because ultrasound was never intended to be used for that long at one time and it's been linked to a bunch of developmental issues.
Don't let the age thing stress you out. Plenty of people have babies when they are "older" and are just fine. You obviously are in pretty good shape for having the baby as you guys didn't even have to go through the full IVF.
Michelle - Proud DR Rockette S: 28JUL07, D'd: 29OCT09 http://tinyurl.com/27j9qo2