Hi Linda and welcome to Mothering! I hope you'll take the time to introduce yourself to our community on a more personal note and contribute as a member to discussions on our many different forums. i;m sure you have a lot to share and a lot to discuss!
I'm moving your post to the I'm Pregnant forum where it should get more responses.
while I have never had a sonogram I have used doppler to listen to hb which is a form of ultrasound. Do you mean both on your survey? it will be hard to find women that haven't used doppler at all during prego but i'm sure they are out there:)
Your question on how many weeks delivery occured at has 36 to 40s as an answer. Those few weeks could make a huge difference for baby. I would expand your questioner so you can narrow down the birth time frame.
I am only 9 weeks pregnant and not planning on having an ultrasound or doppler unless the midwife recommends one because of complications that arise.
I guess I should fill out your survey after the baby is born?